Pearson Higher Nationals in Computing Unit 1: Programming Assignment 1 Godrick Naveen KAN/A-013536 Higher Nationals Internal verification of assessment decisions – BTEC (RQF) INTERNAL VERIFICATION – ASSESSMENT DECISIONS Programme title HND in Computing Miss.Shifani Mohideen Assessor Internal Verifier Unit 1 – Programming Unit(s) Assignment title Design & Implement a GUI based system using a suitable Integrated Development Environment P.V.Godrick Naveen Student’s name List which assessment criteria the Assessor has awarded. Pass Merit Distinction INTERNAL VERIFIER CHECKLIST Do the assessment criteria awarded match those shown in the assignment brief? Is the Pass/Merit/Distinction grade awarded justified by the assessor’s comments on the student work? Has the work been assessed accurately? Is the feedback to the student: Give details: • • Constructive? Linked to relevant assessment criteria? • Identifying opportunities for improved performance? • Y/N Y/N Y/N Y/N Y/N Y/N Y/N Agreeing actions? Does the assessment decision need amending? Y/N Assessor signature Date Internal Verifier signature Date Programme Leader signature (if required) Date Godrick Naveen - HND in Computing |Programming Assignment 01 Page | 1 Confirm action completed Remedial action taken Give details: Assessor signature Internal Verifier signature Date Date Programme Leader signature (if required) Date Student Name/ID KAN/A-013536 Unit Title Unit 01: Programming Assignment Number 1 Assessor Submission Date Date Received 1st submission Re-submission Date Date Received 2nd submission Miss.Shifani Mohideen Higher Nationals - Summative Assignment Feedback Form Assessor Feedback: LO1 Define basic algori thms to carry out an operation and outline the process of programming an application. Pass, Merit & Distinction P1 M1 Descripts LO2 Explain the characteristics of procedural, objectoriented and event-driven programming, Integrated Development Environment (IDE). Pass, Merit & Distinction P2 M2 Descripts D1 D2 LO3 Implement basic al gorithms in code using an IDE. Pass, Merit & Distinction P3 Descripts M3 D3 Godrick Naveen - HND in Computing |Programming Assignment 01 Page | 2 LO4 Determine the deb ugging process and explain the importance of a coding standard. Pass, Merit & Distinction P4 Descripts Grade: P5 M4 Assessor Signature: D4 Date: Resubmission Feedback: Grade: Assessor Signature: Internal Verifier’s Comments: Date: Signature & Date: Assignment Feedback Formative Feedback: Assessor to Student Action Plan Summative feedback Godrick Naveen - HND in Computing |Programming Assignment 01 Page | 3 Feedback: Student to Assessor Assessor signature Date Student signature Date Student Declaration I hereby, declare that I know what plagiarism entails, namely to use another’s work and to present it as my own without attributing the sources in the correct form. I further understand what it means to copy another’s work. 1. I know that plagiarism is a punishable offence because it constitutes theft. 2. I understand the plagiarism and copying policy of Edexcel UK. 3. I know what the consequences will be if I plagiarise or copy another’s work in any of the assignments for this program. 4. I declare therefore that all work presented by me for every aspect of my program, will be my own, and where I have made use of another’s work, I will attribute the source in the correct way. 5. I acknowledge that the attachment of this document signed or not, constitutes a binding agreement between myself and Pearson, UK. 6. I understand that my assignment will not be considered as submitted if this document is not attached to the assignment. Kana013536@esoft.academy Student’s Signature: (Provide E-mail ID) Date: (Provide Submission Date) Godrick Naveen - HND in Computing |Programming Assignment 01 Page | 4 Higher National Diploma in Computing Assignment Brief Student Name /ID Number Unit Number and Title Academic Year Unit 01: Programming 2020/21 Unit Tutor Assignment Title Design & Implement a GUI based system using a suitable Integrated Development Environment Issue Date Submission Date IV Name & Date Submission Format This submission will have 3 components 1. Written Report This submission should be in the form of an individual written report. This should be written in a concise, formal business style using single spacing and font size 12. You are required to make use of headings, paragraphs and subsections as appropriate, and all work must be supported with research and referenced. provide in-text citations, reference list and a bibliography using the Harvard referencing system. (The recommended word count is 2,00–25,00 words for the report excluding annexures) 2. Implemented System (Software) The student should submit a GUI based system developed using an IDE. The system should connect with a backend database and should have at least 5 different forms and suitable functionality including insert, edit and delete of main entities and transaction processing. 3. Presentation Godrick Naveen - HND in Computing |Programming Assignment 01 Page | 5 With the submitted system, student should do a presentation to demonstrate the system that was developed. Time allocated is 10 to 15 min. Student may use 5 to 10 PowerPoint slides while doing the presentation, but live demonstration of the system is required. Evaluator will also check the ability to modify and debug the system using the IDE. Unit Learning Outcomes: LO1. Define basic algorithms to carry out an operation and outline the process of programming an application. LO2. Explain the characteristics of procedural, object-orientated and event-driven programming, conduct an analysis of a suitable Integrated Development Environment (IDE). LO3. Implement basic algorithms in code using an IDE. LO4. Determine the debugging process and explain the importance of a coding standard Godrick Naveen - HND in Computing |Programming Assignment 01 Page | 6 Contents Activity 1 1.1 Algorithm ................................................................................................................. 8 1.2 Linear Search ......................................................................................................... 10 Activity 2 2.1 Programming Paradigms ........................................................................................ 16 2.2 Using the Procedural and Imperative Programming Paradigms in Python Language. ..................................................................................................................... 24 Activity 3 3.1 Algorithms for vehicle tariff calculation for rents and hires.................................. 34 3.2 Database structure for keeping the tariffs for vehicle types and different packages. ...................................................................................................................................... 37 3.3 Integrated Development Environment (IDE)......................................................... 46 Activity 4 4.1 The system to calculate vehicle hire amounts and record...................................... 47 database record for customer billing and management reporting for Ayubo. ............. 47 4.2 What is debugging an application? ........................................................................ 53 4.3 Coding standards .................................................................................................... 56 Godrick Naveen - HND in Computing |Programming Assignment 01 Page | 7 Task 01 1.1 Algorithm What is algorithm? In computer programming, algorithms are often formed as functions. These functions serve as small programs that can be referenced by a larger program. In many cases, there are several ways to perform a specific operation within a software program. In general term, An algorithm is defined as a set of instructions designed to perform a specific task. Algorithms work via input and output. They take the input and apply each step of the algorithm to that information to produce an output. Characteristics of a good algorithm are, Input and output should be defined accurately. Each step in the algorithm should be clear and unmistakable. Algorithms should be most effective among many different ways to solve a problem. An algorithm shouldn't contain computer code. Instead, the algorithm should be written in such a way that it can be used in different programming languages. Linear Search In Linear Search Algorithm method we compare the elements of the array one-by-one with the main element we are looking for in sequential order.The pseudo code for Linear search would be like as given below , BEGIN Index = -1 i=0 Found = False WHILE i < length(numlist) AND NOT found IF numlist[i] == numSought then Index = i Found = True Endif i=i+1 Godrick Naveen - HND in Computing |Programming Assignment 01 Page | 8 Endwhile Return Index END Binary Search The Binary Search Algorithm can only be applied on sorted data and works by finding the middle element in a list of information, some time recently choosing which side of the information the required element is to be found within. The undesirable half of the data is at that point rejected and the process is repeated until the required element is found or until it is known that the required element doesn’t exist within the data. The Time complexity of linear search is “O(n)” The Pseudo code for Binary Search wouldlike as given below , BEGIN Low = 0 High = a.length -1 WHILE Low <= High: Mid = (Low + High) / 2 IF a[Mid] == b: Return Mid Else if a[Mid] > b: High = Mid -1 Else: Low = Mid + 1 Endif Endwhile Return “Not found” END Godrick Naveen - HND in Computing |Programming Assignment 01 Page | 9 1.2 Linear Search in Python Programming Godrick Naveen - HND in Computing |Programming Assignment 01 Page | 10 Searching for Number “25” in the “array” Iteration 1 5 0 10 1 15 2 20 3 25 4 30 5 35 6 40 7 45 8 50 9 Begins from the leftmost element of given array [] and one by one compare element ”a” with each element of array [] Iteration 2 5 0 10 1 15 2 20 3 25 4 30 5 35 6 40 7 45 8 50 9 It continues searching until either the element “25” is found or all the elements are searched. Iteration 3 5 0 10 1 15 2 20 3 25 4 30 5 35 6 40 7 45 8 50 9 10 1 15 2 20 3 25 4 30 5 35 6 40 7 45 8 50 9 Iteration 4 5 0 Godrick Naveen - HND in Computing |Programming Assignment 01 Page | 11 Iteration 4 5 0 10 1 15 2 20 3 25 4 30 5 35 6 40 7 45 8 50 9 Once ”a” equals with any of the element, returns the index value. Efficiency Analysis Best Case The search ends in success The with just one comparison. element being searched may be found at the first position. Worst Case The search terminates in The success with comparisons. element being “n” searched may be existing at the last position or not exist in the array at all. Godrick Naveen - HND in Computing |Programming Assignment 01 Page | 12 Average Case (n + 1) /2 comparison Big-O Notation = O(n) Binary Search in Python Programming Searching for Number “30” in the “array” Godrick Naveen - HND in Computing |Programming Assignment 01 Page | 13 Iteration Low High Mid Found 1 0 9 4 No 2 5 9 7 No 3 5 6 5 Yes Iteration 1 5 0 10 1 15 2 20 3 25 4 30 5 35 6 40 7 45 8 50 9 10 1 15 2 20 3 25 4 30 5 35 6 40 7 45 8 50 9 10 1 15 2 20 3 25 4 30 5 35 6 40 7 45 8 50 9 Iteration 2 5 0 Iteration 3 5 0 Once ”a” equals with any of the element, returns the index value. Godrick Naveen - HND in Computing |Programming Assignment 01 Page | 14 Efficiency Analysis Best Case 1 comparison Item found in the 1st middle element Worst Case Log 2 n comparison Searching for non-existing elements Average Case (Log 2 n + 1) /2 Average of above 2 comparison Big-O Notation = O(Log 2 n) Godrick Naveen - HND in Computing |Programming Assignment 01 Page | 15 Activity 2 2.1 Programming Paradigms What is a programming paradigm ? Programming paradigm is a method to deal with problems using some programming language or additionally we can say it is a strategy to solve a problem using tools and methods that are accessible to us following some methodology. There are lots for programming language that are well-known but all of them need to follow some approaches when they are implemented and this methodology is paradigms. There are two main programming paradigms, an Imperative and a Declarative, and there are numerous paradigms that are inclined by these two types. Imperative Programming Paradigm (Procedural) The main objective of the imperative programming paradigm development is to decrease expenses of program development as well as maintenance. It is a style or method of writing a program. A procedural programming paradigm is derived from structured programming. It is based on the concept of the procedure call. Procedures are also known as sequences, Godrick Naveen - HND in Computing |Programming Assignment 01 Page | 16 subsequences, approaches, or functions. A Procedure contains a chain of instructions coupled together to be carried out. . Imperative Programming Paradigm is related to two other paradigms Structured Programming Paradigm Structured Programming means that the code will implement the instruction by instruction one after the other. It does not support the possibility of skipping from one instruction to some other with the assistance of any statement like GOTO and variables. Functional Programming Paradigm Functional Programming are specially designed to handle representative computation and list processing applications. Functional programming is based on mathematical functions and avoids changing state and variable data. The characteristics of Procedural Programming are as follows , A huge program is broken down into small convenient procedures or functions. This decreases code repetition, which improves readability and maintainability of the code. Different functions can share data through global variables. Functions are completely isolated, therefore if we want to share data, we need to declare it in the upper scope. Functions can change global data. In the mean-time global data are transferred from function to function; during the progression of the transformation, the global data may be improved in function chains. Godrick Naveen - HND in Computing |Programming Assignment 01 Page | 17 Top-down methodology. Procedural programming follows the top-down approach, workflow is going from top to bottom. Below is an example of the main subroutine of a program coded using the procedural paradigm. Advantages of procedural programming The coding is easy and simple. The codes have the capability to be reused in numerous parts of the program. The programming paradigm consumes less memory on the computer. It is easier for tracking the flow of the codes in the program written in the procedural programming paradigm. The programming paradigm is considered as the best for general programming to learn and implement. Restrictions or disadvantages of procedural programming Concentrates on functions rather than data. In a huge program, it is difficult to classify the belonging of global data. The use of global data is error-prone and it could be a barrier in case of maintenance and developments. The modification of global data involves the modification of those functions using it. Maintaining and improving the program code is still difficult because of global data. The procedural programming paradigm does not model the real-world problem very well since functions are action-oriented and do not really agree to the elements of the problem. Object Oriented Paradigm Object-Oriented Paradigm is where we focus on real life objects while programming any solution.. The objective of an object-oriented program is to represent the real world in code. Godrick Naveen - HND in Computing |Programming Assignment 01 Page | 18 In the object-oriented paradigm, the problem is divided into smaller parts called objects, and systems are built around objects. Objects are depictions of things that exist in the real world that we wish to model in a computer system. The characteristics of Object Oriented programming are as follows , Encapsulation Encapsulation is taking data and keeping it securely from outside interfaces. These user defined data types are called "classes," and one occasion of a class is an "object." Abstraction The capability to represent data at a very theoretical level without any details. Abstraction facilitates the easy conceptualization of real world objects, by excluding the pointless details of the object. Inheritance The process by which a class can be derived from a base class with all features of base class and some of its own. This escalates code reusability,Classes are created in hierarchies, and inheritance allows the assembly and methods in one class to be Godrick Naveen - HND in Computing |Programming Assignment 01 Page | 19 distributed down the hierarchy. That means less programming is necessary when adding functions to complex systems. Polymorphism This is the capability to exist in numerous methods, allows procedures about objects to be formed whose precise type is not known until runtime. A comparison between Procedural and Object Oriented Programming Procedural Object Oriented Uses immutable data Uses mutable data Follows the declarative programming Follows the imperative programming model model Extends support to parallel programming Not appropriate for parallel programming The execution order of statements is not The execution of statements is very the primary focus important Flow control is performed using function Flow control is performed through calls Uses conditional statements and loops recursion concept to iterate Uses loop concept to iterate collective collective data data No side effects of its functions The method can have side effects The focus in procedural programming is The “What are you doing” focus in object oriented programming is “How are you doing it” Godrick Naveen - HND in Computing |Programming Assignment 01 Page | 20 Event-driven Programming Paradigms Event-driven Programming is when a program is designed to respond to user involvement in various forms. It is known as a programming paradigm in which the flow of program implementation is determined by “Events”. Events are any user interaction, such as a click or key press, in response to prompt from the system. Events are checked by a code (function) known as an “Event listener”. If the event listener detects that an allocated event has happened, it will prompt a call-back function, known as an event handler. As shown below is an example, The Characteristics of Event-driven Programming are as follows, Time driven Time driven in event driven programming is a paradigm, it is the code that runs on a time prompt, this could be a part of the code that runs at a particular time, which could be once a week or whenever a program is launched, this means it is a pre-set task. Godrick Naveen - HND in Computing |Programming Assignment 01 Page | 21 Event handlers Event handler is a function that takes place when a certain event occurs, they are implemented in response to a certain event that takes place, this can be on a button, when a button is clicked the code is executed, if the button is clicked again after that it will execute again, this is an event handler. Trigger functions Trigger functions choose what code is executed when a particular event takes place, they are used to choose when event handlers are executed for the event that took place, most applications have a trigger function for each event that is probable to occur. Events (Mouse, keyboard and user interface) For the events inside a program to occur, they need to be generated, this is when the user interacts with an object, which may be a button getting clicked by a mouse, events can be generated in may different ways, it can be with your mouse, due to movement, left clicking, right clicking or scrolling, the keyboard can also be used to begin events, this can be from pressing certain keys, holding down certain keys or from being typed onto the keyboard. The events occur due to code being assigned to something, for example code might be assigned to a button, so when that particular button is clicked the code is executed. Pre-defined functions A pre-defined function is a function that is built into the programming language.This can be used as procedural so this code will run as soon as the program is ongoing, or you can assign the code to a button, so that it can be triggered through an event. Local variables A local variable is a variable that is stated within a method, that variable will only be used by the method where it is stated, other methods will not use it. Parameter passing Parameter passing is used by a function, it tolerates a value to be passed through a program, it can be used for many things, including an alarm or discovering a certain Godrick Naveen - HND in Computing |Programming Assignment 01 Page | 22 character at a certain position, through on an alarm, the event doesn’t take place up until a certain time has come, this is due to events. Advantages of Event-driven Programming Flexibility Event-driven can be changed easily if the programmer desires something to be changed. This paradigm lets the programmer to create a form of their requirements. Appropriate for Graphical Interfaces Event-driven allows the user to choose different tools from the toolbar to directly create what they need such as buttons, radio buttons, etc. This also lets to put objects wherever they want them to be and can directly edit. Some find it easier to directly click on the object that they want to edit. Effortlessness of Programming Can make the programming easier is that when using an event driven language such as visual basic it generally has predictive coding so when the user is coding it will suggest what you want to do from what you are typing. Allows for more Interactive Programs It allows for more interactive programs. Nearly all modern GUI programs use eventdriven programming. Using Hardware Interrupts It can be executed using hardware interrupts, which will decrease the power used by the computer. Allows sensors and other hardware It allows sensors and other hardware to effortlessly interact with the software. Disadvantages / Contraints of Event-driven Programming Complexity For simple programs, event-driven programming is often more complex. Less Logical Godrick Naveen - HND in Computing |Programming Assignment 01 Page | 23 The flow of the program is usually less logical. Difficult to find Errors Errors can be more difficult to discover than with simpler, procedural programs. Slower Programs with complex GUIs (Graphical User Interface) may be slower to load and run than simpler program particularly if the RAM (Random Access Memory) is insufficient. Confusing Programs with too many forms can be very confusing for the user. 2.2 Using the Procedural and Imperative Programming Paradigms in Python Language. I have reused the function “calculate_total()” to calculate the “number_list1” and “number_list2” total. The procedural style depends on on procedure calls to create modularised code. Which means you can use functions to group the parallel type of work and makes the overall code simpler. And get the Output as shown below , Godrick Naveen - HND in Computing |Programming Assignment 01 Page | 24 Using the Object Oriented Programming Paradigms in Python Language. Object Oriented Programming Characteristics Classes and Objects Encapsulation Inheritance Polymorphism Class in Python Language In the above Godrick Naveen - HND in Computing |Programming Assignment 01 Page | 25 There is a Class named Student. Constructors have the default name” __init__”. They are functions that are indirectly labelled when an object of the class is formed. All instance methods as well as the constructor have their first parameter as self. Self refers to instance that is being referenced while calling the method. “name” and “age” are the instance variables. Objects in Python Programming Language Godrick Naveen - HND in Computing |Programming Assignment 01 Page | 26 In the above: “S” is the name of the object that I’am creating based on Student class Even though the class has three parameters (self, name, age), I will still pass only name and age while creating an object, as we don’t need to refer self here. It’s implicit. Once an object is formed, you can refer to the attributes of the object using a dot. For example, s.name refers to the name attribute of that individual object Encapsulation in Python Programming Language. This the concept of wrapping data such that the outside world has access only to unprotected properties. Some properties can be hidden to reduce exposure. This is an execution of data hiding. In Python this is implemented by creating private, protected and public instance variables and methods. Godrick Naveen - HND in Computing |Programming Assignment 01 Page | 27 Private properties have double underscore (__) in the start, while protected properties have single underscore (_). By default, all other variable and methods are public. Private properties are available from within the class only and are not available for child class(if inherited). Protected properties are accessible from within the class but are available to child class too. All these constraints are removed for public properties. Given below is the Output , Godrick Naveen - HND in Computing |Programming Assignment 01 Page | 28 Inheritance in Python Programming Language In inheritance, a “class” is inherited by another class (called subclass). The subclass adds some attributes to superclass. Shown below is the Output , Godrick Naveen - HND in Computing |Programming Assignment 01 Page | 29 Polymorphism in Python Programming Language Can produce a function that can take any object, allowing for polymorphism. Godrick Naveen - HND in Computing |Programming Assignment 01 Page | 30 Event driven in Python Programming Language Time driven Events The turtle module in Python has a timer that can effect an event when its time is up.When the event does happen, the handler is called ,and shown below is the event when executed , Godrick Naveen - HND in Computing |Programming Assignment 01 Page | 31 Key-press Events It is needed to call the window’s listen method, or else it won’t respond to the keypresses. The handlers can be randomly complex functions that call other functions. Pressing the “space” key on the keyboard calls function a4 (because it has been bounded to a4). While executing a4, the window’s bye method closes the turtle window, which causes the window’s “mainloop” call to terminate its execution. The keys can be referred on the keyboard by their character code. When the turtle window opens, It enables “t” to move by pressing the arrow keys. Godrick Naveen - HND in Computing |Programming Assignment 01 Page | 32 Mouse Events A mouse event is a bit different from a keypress event because it’s handler needs two parameters to receive a,b coordinate information telling where the mouse was when the event happened. This enables to move the turtle to an accurate coordinate position. So what this program does is move the turtle (and draw a line) to anywhere the mouse is clicked on. Godrick Naveen - HND in Computing |Programming Assignment 01 Page | 33 Activity 3 3.1 Algorithms for vehicle tariff calculation for rents and hires. Function 1: Rent calculation. Function RentCalculation(RegNo,RentedDate,ReturnDate,WithDriver) /*Calculate No of Elapsed Days DateDiff=ReturnDate - RentedDate /*calculate months,weeks,days Months=DateDiff / 30 Remainder = DateDiff % 30 Weeks = Remainder / 7 Days = Remainder % 7 Find the required vehicle record from vehicle table If (found) show VehicleType,MonthlyRate,WeeklyRate,DayRate,DriverRate Amount= Months*MonthlyRate + Weeks*WeeklyRate + Days*DayRate If(With_Driver == true) Total_Amount= Amount+Date_Diff*DriverRate Else Total_Amount=Amount End if Print("Total amount",total_amount") Godrick Naveen - HND in Computing |Programming Assignment 01 Page | 34 Else Print("Vehicle Not found") End if End function Function 2: Day tour. Function day_tour(packageid,start_time,end_time,start_km,end_km) Find the required record from package_table If found() Noofhours=end_time-start_time If no_of_hours>max_hors then ex_hours=no_hours-max_hours ex_hour_charge=ex_hours*ex_hour_rate else ex_hours=0 endif ex_hour_charge=ex_hours*ex_hour_rate no_of_km=end_km-start_km if(no_of_km>max_km) ex_km=no_km-max_km else ex_km=0 endif ex_km_charge=ex_km*ex_km_rate /* calculate total cost Godrick Naveen - HND in Computing |Programming Assignment 01 Page | 35 total_cost=package_rate+ex_hour_charge+ex_km_rate print("total cost:",total_cost) else print("record not found") endif end function Function 3: Long tour. Function Long_tour(Pid,Start_date,End_date,Start_KM,End_KM) Find the required record from Package_table If found() nDays=End_date-Start_date NoofKM=End-Start_KM permitted_KM=Max_KM * NoofDays if(NoofKM>permitted_KM)then Ex_KM=NoofKM-permitted_KM else Ex_KM=0 Endif ExKMCharge=Ex_KM * ExKMRate Print("Extra KM Charge",EXKMCharge) /*calculate Base hire*/ BaseHireCharge=PRate * NoofDays Print("Extra Base Hire Charge",BaseHireCharge) Godrick Naveen - HND in Computing |Programming Assignment 01 Page | 36 /*calculate Night Charge*/ NightCharge=(VehiNightRate + DrNightCharge) * (NoofDays -1) Print("Owner Night Charge",NightCharge) Total_cost=BaseHireCharge + NightCharge + ExKMCharge Print("Total cost :",TotalCost) Else Print("Record Not Found") Endif End function 3.2 Database structure for keeping the tariffs for vehicle types and different packages and Console Applications. The Database structure for Packages is displayed below, Packages Design Godrick Naveen - HND in Computing |Programming Assignment 01 Page | 37 Packages Data The Database structure for Vehicles is displayed below, Vehicle Design Godrick Naveen - HND in Computing |Programming Assignment 01 Page | 38 Vehicle Data Console Applications Rent Calculation Godrick Naveen - HND in Computing |Programming Assignment 01 Page | 39 The Output for Rent calculation, Godrick Naveen - HND in Computing |Programming Assignment 01 Page | 40 Day Tour Godrick Naveen - HND in Computing |Programming Assignment 01 Page | 41 Godrick Naveen - HND in Computing |Programming Assignment 01 Page | 42 Godrick Naveen - HND in Computing |Programming Assignment 01 Page | 43 Long Tour Godrick Naveen - HND in Computing |Programming Assignment 01 Page | 44 Godrick Naveen - HND in Computing |Programming Assignment 01 Page | 45 3.3 Integrated Development Environment (IDE) What is an IDE (Integrated Development Environment)? An integrated development environment (IDE) is a software suite that combines basic tools necessary to write and test software. IDEs provide interfaces for users to write code, organize text groups, and automate programming redundancies. IDE Common Features are, Text editor Virtually every IDE will have a text editor designed to write and manipulate source code. Some tools may have visual components to drag and drop front-end components, but most have a simple interface with language-specific syntax highlighting. Debugger Debugging tools support users in identifying and resolving errors within source code. They often simulate real-world scenarios to test functionality and performance. Programmers and software engineers can usually test the various sections of code and identify errors before the application is released. Compiler Compilers are components that translate programming language into a form that machines can process, such as binary code. The machine code is analysed to confirm its accuracy. The compiler then parses and optimizes the code to optimize performance. Code completion Code complete features assist programmers by intelligently identifying and inserting common code components. These features save developers time writing code and reduce the possibilities of errors and bugs. Programming language support IDEs are normally specific to a single programming language, though several also offer multi-language support. As such, the first step is to discover which languages it will be coding in and narrow of the prospective IDE list down accordingly. Integrations and plugins Godrick Naveen - HND in Computing |Programming Assignment 01 Page | 46 With the name integrated development environment, it is no surprise that integrations need to be considered when looking at IDEs. The IDE is the development portal, so being able to include all the other development tools will improve development workflows and productivity. Poor integrations can cause several issues and lead to many headaches, so make sure to understand how well a potential IDE fits into the ecosystem of existing tools. 4.1 The system to calculate vehicle hire amounts and record database record for customer billing and management reporting for Ayubo. Login Interface Godrick Naveen - HND in Computing |Programming Assignment 01 Page | 47 Main Menu Interface Package Details Interface Godrick Naveen - HND in Computing |Programming Assignment 01 Page | 48 Vehicle Details Interface Rent Calculation Interface Godrick Naveen - HND in Computing |Programming Assignment 01 Page | 49 Day Tour Interface Long Tour Interface Godrick Naveen - HND in Computing |Programming Assignment 01 Page | 50 Backend Code for Rent Calculation Godrick Naveen - HND in Computing |Programming Assignment 01 Page | 51 Backend Code for Day Tour Calculation Backend Code for Long Tour Calculation Godrick Naveen - HND in Computing |Programming Assignment 01 Page | 52 4.2 What is debugging an application? Debugging is the process of identifying and eliminating of existing and potential errors (also called as ‘bugs’) in a software code that can cause it to behave unexpectedly or crash. To prevent incorrect operation of a software or system, debugging is used to find and resolve bugs or defects. When various subsystems or components are firmly coupled, debugging becomes harder as any change in one component may cause more bugs to appear in another. Sometimes it takes more time to debug a program than to code it. The debugging process, 1. Reproduce the problem. 2. Describe the bug. Try to get as much input from the user to get the precise reason. 3. Capture the program snapshot when the bug appears. Try to get all the variable values and states of the program at that time. 4. Examine the snapshot based on the state and action. Based on that try to find the cause of the bug. 5. Fix the existing bug, but also check that any new bug does not occur. The features available in Visual studio IDE for Debugging, When running the app in Visual Studio for the first time, we may start it by pressing the green arrow button Start Debugging in the toolbar (or F5). By default, the Debug value appears in the drop-down to the left. If you are new to Visual Studio, this can leave the impression that debugging the app has something to do with running the app which it does but these are basically two very different tasks. Select a Debug build A Debug value indicates a debug configuration. When we start the app (press the green arrow or F5) in a debug configuration, we start the app in debug mode, which means we are running the app with a debugger attached. This enables a full set of debugging features that can be used to help find bugs in the app. Godrick Naveen - HND in Computing |Programming Assignment 01 Page | 53 If we have a project open, choose the drop-down selector where it says Debug and choose Release instead. Select a Release build When we switch this setting, we change our project from a debug configuration to a release configuration. Visual Studio projects have separate release and debug configurations for our program. We build the debug version for debugging and the release version for the final release distribution. A release build is optimized for performance, but a debug build is better for debugging. Fix an exception When i have fixed all the red squiggles and resolved or at least investigated all the green squiggles, I am ready to start the debugger and run the app. Press F5 (Debug > Start Debugging) or the Start Debugging button Start Debugging in the Debug toolbar. At this point, the sample app throws a Serialization Exception (a runtime error). That is, the app blocks on the data that it is trying to serialize. Because I started the app in debug mode (debugger attached), the debugger's Exception Helper takes you right to the code that threw the exception and gives a helpful error message. Godrick Naveen - HND in Computing |Programming Assignment 01 Page | 54 Break points I set breakpoints wherever you want to pause debugger execution. I can break execution when a function is called. When i debug, execution pauses at the breakpoint, before the code on that line is executed. This is useful, for example, when you know the function name but not its location. It is also useful if you have functions with the same name and you want to break on them all (such as overloaded functions or functions in different projects). Godrick Naveen - HND in Computing |Programming Assignment 01 Page | 55 4.3 Coding standards They are a series of measures that can be defined for a particular programming language specifying a programming style, the methods, & different procedures. These procedures can be for various characteristics of the program written in that language. They can be considered as essential attributes of software development. A coding standard makes sure that all the developers working on the project are following certain specified guidelines. The code can be easily understood and proper consistency is maintained. Consistency has a positive impact on the quality of the program and one should maintain it while coding. Also, it should be taken care that the guidelines are consistently followed across different levels of the system and they do not oppose each other. The finished program code should look like that it has been written by a single developer, in a single session. The coding standards that I have used in my application development are, Code Comments and Proper Documentation It is a good practice to comment while writing code. It helps other developers to understand your code. With the use of the Integrated Development Environment and other tools, commenting can be utilized in many different ways. It is advisable to start every method or routine with the comment specifying what a routine, method or a function does, about its various parameters, its return values, errors and exceptions (if any). Also, the role of each file and class, their contents and even the steps of complex codes should be summarized in the comments. Godrick Naveen - HND in Computing |Programming Assignment 01 Page | 56 Use of Indentation It is advisable to make use of indentation while writing the code. There is no particular style defined, but any style can be chosen for writing code. However, a consistent indentation style should be followed throughout the code. For Instance, Using Variables Variables are the names I gave to computer memory locations which are used to store values in a computer program. In most or all software programming languages, variables work like containers to hold numbers, phrases, or other important stuff used in numerous places in my code. Godrick Naveen - HND in Computing |Programming Assignment 01 Page | 57 Why a coding standard is necessary for the team as well as for the individual. Coding standards are a set of guidelines, best practices, programming styles and conventions that developers follow to when writing source code for a project. All big software companies have them. A coding standards document tells developers how they must write their code. Instead of each developer coding in their own preferred style, they will write all code to the standards outlined in the document. This makes sure that a large project is coded in a reliable style parts are not written differently by different programmers. Not only does this solution make the code easier to understand, it also ensures that any developer who looks at the code will know what to expect throughout the entire application. Working Independently. In this case programmer has to follow those coding standards because the programmer needs to state an efficient well working computer application. Because of that the inner logic of the program should be clearly stated, that means the code. If the programmer works according to the coding standards the code will be not only simpler but also will be efficient too. When proper coding standards are used , there will be no errors in the specific program. In that case the testing stage will be easier. Because of that the deployment process of the program will be efficient so the programmer can develop the program within the given time period. When you start sharing code or start reading code shared by others, you begin to realize that not everybody writes their code they way you do. You see that other, ugly coding Godrick Naveen - HND in Computing |Programming Assignment 01 Page | 58 style, and think “everybody needs to write in the same style that I do so that things are easier to understand.” Therefore, it is natural that everybody wants their own ways turned into the standard, so they don’t have to change their habits. If the entire team work according to a specific coding standard the combining process will be easier and the wastage of the time will be decreased because of that. So if the programmers use same standards it will make things much easier for the team. Likewise, the coding standards is not only important in working as a team but also it benefits in working as individual as well. Godrick Naveen - HND in Computing |Programming Assignment 01 Page | 59 Acknowledgement The success and final outcome of this assignment required a lot of guidance and assistance from Mrs.Shifani Mohideen and I am extremely fortunate to have got this all along the completion of my assignment work. Whatever I have done is only due to such guidance and assistance and I would not forget to thank her. I respect and thank all my colleagues at the Esoft metro campus, for providing me all support and guidance which made me complete the assignment on time . I am extremely grateful to be a part of this amazing team. Thanking you, Godrick naveen Godrick Naveen - HND in Computing |Programming Assignment 01 Page | 60 References (Bhatt, 2019) https://medium.com/@bhattshlok12/characteristics-of-an-algorithm-49cf4d7bcd9 Stevenson, Joseph. http://neonbrand.com/procedural-programming-vs-object-oriented-programming-areview/ (Lynch, A., 2020) https://www.edrawsoft.com/flowchart/program-flowchart-definition.html Godrick Naveen - HND in Computing |Programming Assignment 01 Page | 61