DEFINE ALGORITHM, FLOWCHART & PSEUDOCODE
ALGORITHM
FLOWCHART
1. DEFINITION
- sequence of steps required
for problem solution
1. DEFINITION
- an algorithm represented graphically
2. CHARACTERISTIC
- instruction 



Simple
Accurate
General statements
Not be repeated
infinitely
- should be stopped after performing
the instruction
3. EXAMPLE
INPUT
OUTPUT
- Boiling
the water
- Adding
coffee
powder &
sugar
- Mixing the
contents
Coffee
KEYWORD
//
begin .. end
DISADVANTAGE
- easy to understand
- easy identify the reason
of any errors
- avoid forgetting any
steps while writing
program
- easier to write program
after drawing
- time-consuming
- difficult to draw if
program contain
complex branches &
loops
- amount is not
standardized
4. EXAMPLE
INPUT
Start the process of
making coffee
Take water, coffee
powder and sugar
Boil water
PROCESS
OUTPUT
1. DEFINITION
- detailed description of what a
computer program or algorithm
must perform
2. KEYWORD
3. ADVANTAGE & DISADVANTAGE
ADVANTAGE
PROCESS
- Water
- Coffee
powder
- Sugar
2. SYMBOLS
 terminal
 input / output
 processing
 decision
 connecter
 row line
PSEUDOCODE
Add coffee powder and sugar
then mix the contents
coffee
Drink / serve the coffee
DESCRIPTION
Comment entry
Block of statements that performs a
specific task
Accept
Accept input values
Display
Display output
Set
if .. else
For
Initializes value of variables
Block of statements
Number of times the block
3. ADVANTAGE & DISADVANTAGE
ADVANTAGE
DISADVANTAGE
- enable even non-program
- time taken to write is less
- easier to modify
- easy converted into a
program
- difficult to beginners to
write
- no standard rules
4. EXAMPLE
// Pseudo code to find whether a student a student has
passed in a examination
begin
accept the mark obtained by the student
if the mark is greater than or equal to 40
display “Pass”
or else
display “Fail”
end