Using C program to add two number's .

 

➤  Program to add two numbers .

 
#include<stdio.h>
int main()
{ int a,b;
  a=19;
  b=35;
  printf("Sum of %d and %d is = %d",a,b,a+b);
return 0;
}

OUTPUT :

Sum of 19 and 35 is = 54

➤  Program to add numbers by accepting input from user input .

#include<stdio.h>
int main()
{
int a,b,sum;
printf("Enter two numbers: ");
scanf("%d%d",&a,&b);
sum=a+b;
printf("sum of %d and %d is = %d",a,b,sum);
return 0;
}
 
OUTPUT :
Enter two numbers: 4 6
sum of 4 and 6 is = 10

➤  Program to add numbers from 1 to n using while loop .

#include<stdio.h>
int main()
{   int i=1,n,sum=0;
    printf("Enter the value of n:");
    scanf("%d",&n);
    while(i<=n)
    {
        sum=sum+i;
        i++;
    }
    printf("The sum of %d numbers is :%d",n,sum);
    return 0;
}
 
//#while_loop
 
OUTPUT :

Enter the value of n: 6
The sum of 6 numbers is :21
 
Enter the value of n: 8
The sum of 8 numbers is :36

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