Introduction of C

Refference by Syed Zulqurnain Jaffery & Ms. Shahina Naz

Write a program of addition of two characters in C

Source Code:

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#include <stdio.h> #include <conio.h> void main (void) { char ch1, ch2, sum; ch1 = '5' ; ch2 = '9' ; sum = ch1 + ch2; printf("Sum = %d", sum); getch(); }// main

Result:

Sum = 109

Write a program that converting Centigrade temperatures to Fahrenheit in C

Formula: F = 32 + (C * 180.0/100.0)

Source Code:

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#include <iostream.h> #include <conio.h> void main(void) { clrscr (); float F, C; C = -10; F = 32 + (C * 180.0/100.0); printf("F = %2.2f",F); // use field-width specifier getch(); } //main

Result:

F = 14.00

Write a program to calculate and print the area of a square in C

Source Code:

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#include <stdio.h> #include <conio.h> void main (void) { int Height, Width, Area; Height = 8, Width = 5; printf("Area of Square = %d", Area); getch (); }// main

Result:

Area of Square = 40

Write a program that subtract two floating point numbers and shows their sum on the screen in C

Source Code:

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#include <stdio.h> #include <conio.h> void main (void) { Float Num1, Num2, Sub; Num1 = 8; Num2 = 5; Sub = Num1 - Num2; printf("%2.2f + %2.2f = %2.2f ", Num1, Num2, Sub); getch (); }// main

  Result:

65.77 – 24.27 = 41.5

Write a program that print "Assalam O Alikum!!! World" in C

Input:

#include <stdio.h>
#include <conio.h>
void main (void)
{
     printf("Assalam O Alikum!!! World");
     getch ();
     } // main

Output:

Assalam O Alikum!!! World

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