SAMPLE OF C PROGRAM

Sample C Program

1.Write a program to print 'hello world'.

      #include<stdio.h>

      void main()

      { printf("hello world");

}

Output 

hello world

 2.Write a program which initialize a variable to value 1000 print the value back.

      #include<stdio.h>

      void main()

      

     { int num =1000;

        printf("value is %d",num);

}

 

 Output 

 Value is  1000

3.  Write a program which allows user to enter an integer and print it back.

      #include<stdio.h>

      void main()

  {

      int x,

      printf("enter an integer");

      scanf("%d",&x);

      printf("value is %d",x);

}

Output

Enter an integer 33

value is 33

4. Write a program which allows users to enter an integer and print its square.

    #include<stdio.h>

    void main()

   {  

        int x,sq;

       printf("Enter an integer");

       scanf("%d",&x);

       sq=x*x;

       printf("Square is %d",sq);

       

}

 Output

 Enter an integer 10

 Square is 100

5.  Write a program which print sum and difference of two user entered integer.

      #include<stdio.h>

      void main()

    {

            int x,y,sum,diff;

         printf("Enter two integer");

         scanf("%d%d",&x,&y);

         sum=x+y;

         diff =x-y;

         printf("sum is %d \n Difference is %d",sum,diff);

}

Output 

Enter two integer 10 2

sum= 12

Difference= 8

6.  write a program which allow user to enter three integer and print their average

  #include<stdio.h>

  void main()

{  int x,y,z;

    float avg;

    printf("Enter three integer");

    scanf("%d%d%d",&x,&y,&z);

    avg=(x+y+z)/3.0;

    printf("Average is %f",avg);

}

Output

Enter three Integer 2 3 4

Average 3.0000