 Any


C Program consists of the following parts:
Preprocessor part
Main function. This consists of the following:






The declaration part
The Initialization part
The Input
Processing (Assignment, if/switch, calculations, or any other
C statements that will be covered later)
The Output
Return (0) command
 This
is shown in the diagram of the next slide.
Dr. Soha S. Zaghloul
2
Preprocessor part (#include, #define)
Main function
int main (void)
{
// declaration part
// initialization part
// input part
// processing
// output
Return (0);
} // end of main function
Dr. Soha S. Zaghloul
3
Preprocessor part (#include, #define)
Main function
int main (void)
{
// declaration part
int number1, number2, number3;
char gender;
double salary;
// initialization part
// input part
// processing
// output
Return (0);
} // end of main function
Dr. Soha S. Zaghloul
4
Preprocessor part (#include, #define)
Main function
int main (void)
{
// declaration part
// initialization part
total = 0; // previously declared
double product = 1.0; // undeclared
char name[20] = “xxxxxxxxxxxxxxxx”; //undeclared
// input part
// processing
// output
Return (0);
} // end of main function
Dr. Soha S. Zaghloul
5
Preprocessor part (#include, #define)
Main function
int main (void)
{
// declaration part
// initialization part
// input part
printf (“Enter the values of three integers\n”);
scanf (“%d%d%d”, &number1, &number2, &number3);
// processing
// output
Return (0);
} // end of main function
Dr. Soha S. Zaghloul
6
Preprocessor part (#include, #define)
Main function
int main (void)
{
// declaration part
// initialization part
// input part
// processing
total = number1 + number2 + number3;
// output
Return (0);
} // end of main function
Dr. Soha S. Zaghloul
7
Preprocessor part (#include, #define)
Main function
int main (void)
{
// declaration part
// initialization part
// input part
// processing
total = total + number1;
product = product * number2;
// output
Return (0);
} // end of main function
Dr. Soha S. Zaghloul
8
Preprocessor part (#include, #define)
Main function
int main (void)
{
// declaration part
// initialization part
// input part
// processing
if (total == 0)
total = total + number1;
else
product = product * number1;
// output
Return (0);
} // end of main function
Dr. Soha S. Zaghloul
9
Preprocessor part (#include, #define)
Main function
int main (void)
{
// declaration part
// initialization part
// input part
// processing
// output
printf (“Final Results are: “);
printf (“Total = %d, Product = %f”, total, product);
Return (0);
} // end of main function
Dr. Soha S. Zaghloul
10
Write a complete program that calculates the average of three
integer numbers.
Input?
Type?
value?
number1
number2
number3
integer
integer
integer
Through scanf
Through scanf
Through scanf
Output?
Type?
value?
average
double
To be calculated
// declaration part
int number1, number2, number3;
double average;
// input part
printf (“Enter the values of the three integers: \n”);
scanf (“%d%d%d”, &number1, &number2, &number3);
Dr. Soha S. Zaghloul
11
Write a complete program that calculates the average of three
#include <stdio.h>
integer numbers.
int main (void)
{
// declaration part
int number1, number2, number3;
double average;
// input part
printf (“Enter the values of the three integers: \n”);
scanf (“%d%d%d”, &number1, &number2, &number3);
// processing part
average = (number1 + number2 + number3) /3.0;
// output part
printf (“The average equals %f “, average);
return (0);
Dr.
Sohaend
S. Zaghloul
} //
of main
12
Write a complete program to select an operation based on the value
of inventory. Increment total_paper by paper_order if inventory is
‘B’ or ‘C’; increment total_ribbon by ribbon_order if inventory is
‘E’, ‘F’, or ‘D’; increment total_label by label_order if inventory is
‘A’ or ‘X’. Do nothing if inventory is ‘M’. Display an error
message if the value of inventory is not one of these eight letters.
input?
type?
value?
inventory
paper_order
ribbon_order
label_order
char
integer
integer
integer
Through
Through
Through
Through
// declaration part
char inventory;
int paper_order, ribbon_order, label_order;
Dr. Soha S. Zaghloul
13
scanf
scanf
scanf
scanf
Write a complete program to select an operation based on the value
of inventory. Increment total_paper by paper_order if inventory is
‘B’ or ‘C’; increment total_ribbon by ribbon_order if inventory is
‘E’, ‘F’, or ‘D’; increment total_label by label_order if inventory is
#include <stdio.h>
‘int
A’ main
or ‘X’.
Do nothing if inventory is ‘M’. Display an error
(void)
{message if the value of inventory is not one of these eight letters.
// declaration part
char inventory;
int paper_order, ribbon_order, label_order;
// input part
printf (“Enter inventory \n”);
scanf (“%c”, inventory);
Dr. Soha S. Zaghloul
14
#include <stdio.h>
Write
complete program to select an operation based
int maina (void)
of
{ inventory. Increment total_paper by paper_order if
on the value
inventory is
‘B’declaration
or ‘C’; increment
total_ribbon by ribbon_order if inventory is
//
part
char
inventory;
‘E’, ‘F’,
or ‘D’; increment total_label by label_order if inventory is
int paper_order, ribbon_order, label_order;
‘A’ or ‘X’. Do nothing if inventory is ‘M’. Display an error
// input part
message
if the
value of\n”);
inventory is not one of these eight letters.
printf (“Enter
inventory
scanf (“%c”, inventory);
// iniatlization part
int total_paper = 0;
// processing part
switch (inventory)
{
case ‘B’:
case ‘C’: printf (“Enter amount of ordered paper \n”);
scanf (“%d”, &paper_order);
total_paper = total_paper + paper_order;
printf (“Total paper = %d”, total_paper);
break;
Dr. Soha S. Zaghloul
15
#include <stdio.h>
Write
complete program to select an operation based
int maina (void)
{of inventory. Increment total_paper by paper_order if
// declaration part
‘B’
or ‘C’; increment total_ribbon by ribbon_order if
char inventory;
‘E’,
‘F’, or ‘D’;ribbon_order,
increment total_label
by label_order if
int paper_order,
label_order;
on the value
inventory is
inventory is
inventory is
‘//
A’ input
or ‘X’.
part Do nothing if inventory is ‘M’. Display an error
message
if the
value of\n”);
inventory is not one of these eight letters.
printf
(“Enter
inventory
scanf (“%c”, inventory);
// iniatlization part
int total_paper = 0, total_ribbon = 0;
// processing part
// continuation of the switch statement
case ‘E’:
case ‘F’:
case ‘D’: printf (“Enter amount of ordered ribbon \n”);
scanf (“%d”, &ribbon_order);
total_ribbon = total_ribbon + paper_order;
printf (“Total ribbon = %d”, total_ribbon);
break;
Dr. Soha S. Zaghloul
16
#include <stdio.h>
Write
complete program to select an operation based
int maina (void)
of
{ inventory. Increment total_paper by paper_order if
//
part
‘B’declaration
or ‘C’; increment
total_ribbon by ribbon_order if
char inventory;
‘E’,
‘F’, or ‘D’;ribbon_order,
increment total_label
by label_order if
int paper_order,
label_order;
on the value
inventory is
inventory is
inventory is
‘A’ or ‘X’. Do nothing if inventory is ‘M’. Display an error
// input part
message if the value of inventory is not one of these eight letters.
printf (“Enter inventory \n”);
scanf (“%c”, inventory);
// iniatlization part
int total_paper = 0, total_ribbon = 0, total_label = 0;
// processing part
// continuation of the switch statement
case ‘A’:
case ‘X’: printf (“Enter amount of ordered label \n”);
scanf (“%d”, &label_order);
total_label = total_label + label_order;
printf (“Total label = %d”, total_label);
break;
Dr. Soha S. Zaghloul
17
#include <stdio.h>
int main (void)
{
Write a complete program to select an operation based on the value
of
inventory. Increment total_paper by paper_order if inventory is
// declaration part
‘B’ or
‘C’; increment total_ribbon by ribbon_order if inventory is
char
inventory;
int
label_order;
‘E’,paper_order,
‘F’, or ‘D’;ribbon_order,
increment total_label
by label_order if inventory is
//
part Do nothing if inventory is ‘M’. Display an error
‘A’ input
or ‘X’.
printf (“Enter inventory \n”);
message
if the
value of inventory is not one of these eight letters.
scanf (“%c”,
inventory);
// iniatlization part
int total_paper = 0, total_ribbon = 0, total_label = 0;
// processing part
// continuation of the switch statement
case ‘M’: break;
default: printf (“Invalid input \n”);
break;
} // end of switch statement
return (0);
Dr. Soha S. Zaghloul
} //end of main
18
//invalid inventory value
// processing part
// Using if statement
if (inventory == ‘B’) || (inventory == ‘C’)
{
printf (“Enter amount of ordered paper \n”);
scanf (“%d”, &paper_order);
total_paper = total_paper + paper_order;
printf (“Total paper = %d”, total_paper);
} // (inventory == ‘B’) || (inventory == ‘C’)
else if (inventory == ‘E’) || (inventory == ‘F’) || (inventory == ‘D’)
{
printf (“Enter amount of ordered ribbon \n”);
scanf (“%d”, &ribbon_order);
total_ribbon = total_ribbon + paper_order;
printf (“Total ribbon = %d”, total_ribbon);
} // (inventory == ‘E’) || (inventory == ‘F’) || (inventory == ‘D’)
else if (inventory == ‘A’) || (inventory == ‘X)
{
printf (“Enter amount of ordered label \n”);
scanf (“%d”, &label_order);
total_label = total_label + label_order;
printf (“Total label = %d”, total_label);
} // (inventory == ‘A’) || (inventory == ‘X)
else if (inventory != ‘M’) // what if (inventory == ‘M)?
printf (“Invalid Input \n”)
Dr. Soha S. Zaghloul
19
The table below shows the normal boiling points of several
substances. Write a program that prompts the user for the
observed boiling point of a substance in ºC. The program
then identifies the substance if the observed boiling point is
within 5% (more or less) of the expected boiling point. If the
data input is more than 5% higher or lower than any of the
boiling points in the table, the program should output the
message “Substance unknown”.
Substance
Expected Boiling Point (ºC)
Water
100
Mercury
357
Copper
1187
Silver
2193
Gold
2660
Dr. Soha S. Zaghloul
20
The table below shows the normal boiling points of several
substances. Write a program that prompts the user for the
observed boiling point of a substance in ºC. The program
then identifies the substance if the observed boiling point is
within 5% (more or less) of the expected boiling point. If the
data input is more than 5% higher or lower than any of the
boiling points in the table, the program should output the
message “Substance unknown”.
Substance
Expected Boiling Point (ºC)
Water
100
Mercury
357
Copper
1187
Silver
2193
Gold
2660
Dr. Soha S. Zaghloul
21
Input?
Type?
value?
observed
double
Through scanf
Output?
Type?
value?
substance
string
To be calculated
#include <stdio.h>
int main (void)
{
// declaration part
int observed;
char substance[20];
// input part
printf (“Enter the observed boiling point: \n”);
scanf (“%d”, &observed);
return (0);
Dr.
Sohaend
S. Zaghloul
} //
of main
22
The table below shows the normal boiling points of several
substances. Write a program that prompts the user for the
observed boiling point of a substance in ºC. The program
then identifies the substance if the observed boiling point is
within 5% (more or less) of the expected boiling point. If the
data input is more than 5% higher or lower than any of the
water_plus5 = (100 * 0.05) + 100;
boiling
points =in
the
table,
the program should output the
water_minus5
(100
* 0.05)
– 100;
message
“Substance
unknown”.
if (observed
>= water_minus5)
&& (observed <= water_plus5)
strcopy (substance, “water”);
Substance
Expected Boiling Point (ºC)
Water
100
Mercury
357
Copper
1187
Silver
2193
Gold
2660
Dr. Soha S. Zaghloul
23
The table below shows the normal boiling points of several
substances. Write a program that prompts the user for the
observed boiling point of a substance in ºC. The program
then identifies the substance if the observed boiling point is
within 5% (more or less) of the expected boiling point. If the
data
input is more than 5% higher or lower than any of the
in the same way, calculate:
boiling
points in
the table, the program should output the
mercury_plus5,
mercury_minus5,
copper_plus5,
copper_minus5,
message
“Substance
unknown”.
silver_plus5, silver_minus5,
Substance
Expected Boiling Point (ºC)
gold_plus5, gold_minus5
Water
100
Mercury
357
Copper
1187
Silver
2193
Gold
2660
Dr. Soha S. Zaghloul
24
The table below shows the normal boiling points of several
substances. Write a program that prompts the user for the
observed boiling point of a substance in ºC. The program
then identifies the substance if the observed boiling point is
within 5% (more or less) of the expected boiling point. If the
data input is more than 5% higher or lower than any of the
boiling pointsDon’t
in the
table,
the program
should output the
forget
to declare
your variables!!!
message “Substance unknown”.
Substance
Expected Boiling Point (ºC)
Water
100
Mercury
357
Copper
1187
Silver
2193
Gold
2660
Dr. Soha S. Zaghloul
25
The table below shows the normal boiling points of several
substances. Write a program that prompts the user for the
observed boiling point of a substance in ºC. The program
then identifies the substance if the observed boiling point is
within 5% (more or less) of the expected boiling point. If the
data input is more than 5% higher or lower than any of the
boiling Complete
points inthethe
table, the program
should
output the
if statement…and
conclude your
program
message “Substance unknown”.
Substance
Expected Boiling Point (ºC)
Water
100
Mercury
357
Copper
1187
Silver
2193
Gold
2660
Dr. Soha S. Zaghloul
26
Write a program that calculates and prints the bill for
Riyadh’s power consumption. The rates vary depending on
whether the user is residential, commercial, or industrial. A
code of R corresponds to a Residential, C corresponds to a
Commercial, and I to Industrial. Any other code should be
treated as an error.
The program should read the power consumption rate in
KWH (Kilowatt per Hour); then it calculates the due amount
according to the following:
The rate is SAR 5 per KWH for Residential, SAR 10 per
KWH for Commercial and SAR 20 per KWH for Industrial.
Dr. Soha S. Zaghloul
27
Write a program that calculates and prints the bill for
Riyadh’s power consumption. The rates vary depending on
whether the user is residential, commercial, or industrial. A
code of R corresponds to a Residential, C corresponds to a
Commercial, and I to Industrial. Any other code should be
treated as an error.
The program should read the power consumption rate in
KWH (Kilowatt per Hour); then it calculates the due amount
according to the following:
The rate is SAR 5 per KWH for Residential, SAR 10 per
KWH for Commercial and SAR 20 per KWH for Industrial.
Dr. Soha S. Zaghloul
28
Write a program that calculates and prints the bill for
Riyadh’s power consumption. The rates vary depending on
whether the user is residential, commercial, or industrial. A
code of R corresponds to a Residential, C corresponds to a
Commercial, and I to Industrial. Any other code should be
treated as an error.
The program should read the power consumption rate in
KWH (Kilowatt per Hour); then it calculates the due amount
according to the following:
The rate is SAR 5 per KWH for Residential, SAR 10 per
KWH for Commercial and SAR 20 per KWH for Industrial.
Dr. Soha S. Zaghloul
29
Write a program that calculates and prints the bill for
Riyadh’s power consumption. The rates vary depending on
whether the user is residential, commercial, or industrial. A
code of R corresponds to a Residential, C corresponds to a
Commercial, and I to Industrial. Any other code should be
treated as an error.
The program should read the power consumption rate in
KWH (Kilowatt per Hour); then it calculates the due amount
according to the following:
The rate is SAR 5 per KWH for Residential, SAR 10 per
KWH for Commercial and SAR 20 per KWH for Industrial.
Dr. Soha S. Zaghloul
30
Write a program that calculates and prints the bill for
Riyadh’s power consumption. The rates vary depending on
whether the user is residential, commercial, or industrial. A
code of R corresponds to a Residential, C corresponds to a
Commercial, and I to Industrial. Any other code should be
treated as an error.
The program should read the power consumption rate in
KWH (Kilowatt per Hour); then it calculates the due amount
according to the following:
The rate is SAR 5 per KWH for Residential, SAR 10 per
KWH for Commercial and SAR 20 per KWH for Industrial.
Dr. Soha S. Zaghloul
31