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C : Add Two Integers

Tutorial by:Manisha Dubey      Date: 2016-06-17 03:01:15

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Program to Add Two Integers

#include <stdio.h>
int main()
    int firstNumber, secondNumber, sumOfTwoNumbers;
    printf("Enter two integers: ");

    // Two integers entered by user is stored using scanf() function
    scanf("%d %d",&firstNumber, &secondNumber);

    // sum of two numbers in stored in variable sumOfTwoNumbers
    sumOfTwoNumbers = firstNumber + secondNumber;

    // Displays sum      
    printf("%d + %d = %d", firstNumber, secondNumber, sumOfTwoNumbers);

    return 0;


Enter two integers: 12
12 + 11 = 23

In this program, user is asked to enter two integers. Two integers entered by the user is stored in variables firstNumber and secondNumber respectively. This is done using scanf() function.


Then, variables firstNumber and secondNumber is added using + operator and the result is stored in sumOfTwoNumbers.

Finally, the sumofTwoNumbers is displayed on the screen using printf() function.

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