C Program to calculate sum of two numbers

Write a program in C to enter two numbers from user and calculate their sum. C program to add two numbers and display their sum as output. 

Example:

Enter first number: 10 

Enter second number: 10 

Output: Sum = 20 

Required knowledge:
Fundamentals of C Data types, Taking user input in C 

Program:

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/**  * C program to calculate sum of two numbers  */ #include <stdio.h> void main() {     int num1, num2, sum;           /*      * Read two numbers from user      */     printf("Enter first number: \n");     scanf("%d", &num1);     printf("Enter second number: \n");     scanf("%d", &num2);           /* Adding both number*/     sum = num1 + num2;           /* Prints the sum of two numbers */     printf("Sum of %d and %d = %d",num1, num2, sum);       }

Note: The above program can also written using single scanf() function as below.

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/**  * C program to find sum of two numbers  */ #include <stdio.h> void main() {     int num1, num2, sum;           /*      * Read two numbers from user      */     printf("Enter any two numbers : \n");     scanf("%d%d", &num1, &num2);           sum = num1 + num2;           /* Prints the sum of two numbers */     printf("Sum of %d and %d = %d",num1, num2, sum);       }

Note: \n is a escape sequence character used to print new line or next line.

Output

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Enter any two numbers :
20
20
Sum of 20 and 20 = 40

Enjoy it......