C program to the sum of two numbers

In this tutorial, we will discuss the C program to the sum of two numbers.

In this topic, we will learn how to find the sum of two integer number in C language

Sum of two integer

Program 1

#include <stdio.h>
#include <stdlib.h>

int main()
{
    int num_1=56,num_2=34,sum;
//value already assigned
    sum=num_1+num_2;//calculate sum
    printf("\sum of these numbers: %d ",sum);//display sum value
    getch();
    return 0;
}

When the above code is compiled and executed, it produces the following results

sum of these numbers: 90

Sum of two integer- get user input

Program 2

#include <stdio.h>
#include <stdlib.h>

int main()
{
    int num_1,num_2,sum;//declared variable
    printf("\Enter two integer value: ");
   scanf("%d %d",&num_1,&num_2);
   //call the scanf() function to store values entered by user
    sum=num_1+num_2;
    //calculate sum of two numbers in stored in variable sum
    printf("%d + %d =%d:",num_1,num_2,sum);//display sum of numbers
    getch();
    return 0;
}

When the above code is compiled and executed, it produces the following results

Enter two integer value: 45 65
45 + 65 = 110

In the above program, the user is entered two integer point value for find sum.

we use the pre-defined function scanf() for getting value from the user. So two integer values entered by the user and it is stored in variables num_1 and num_2

Then, te variables num_1 and num_2 are added using plus(+) operator and then the result displaying on the screen using printf() function

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