Write a C Program to Add Two Numbers.

In this Article, you will learn how to add two numbers entered by the user.

#include<stdio.h>

#include<conio.h>

void main()

{

    // Declare variables to store the two numbers

    int a, b;

    // Prompt the user to enter the first number

    printf("Enter the first number: ");

    scanf("%d", &a);

    // Prompt the user to enter the second number

    printf("Enter the second number: ");

    scanf("%d", &b);

    // Calculate the sum of the two numbers

    int c= a+ b;

    // Display the result

    printf("The sum of %d and %d is %d.\n", a, b, c);

}

This program uses a integer integer variables a and b to store the user's input. It prompts the user to enter their name using printf and reads the user's input using scanf. The "%d" format specifier tells scanf to read an integer from the user and store it in the variable number.

After successfully reading the input, the program displays the entered integer back to the user using printf. The message "Enter the first number:" is shown, followed by the value of the variable number.

The sum of a and b is calculated and stored in a new variable called c.

Finally, the program displays the result by printing the message "The sum of {a} and {b} is {c}." using the printf() function.

When you run this program, it will take two integer inputs from the user, add them together, and then display the sum on the screen. For example:

Output:

Flow Chat of program:

Draw a flowchart to find sum of two number.

Algorithm

Write an algorithm to find out sum of two numbers.

Step 1 : input two numbers : a,b Step 2 : calculate c = a+b Step 3 : print "The sum of %d and %d is %d.", a, b, c Step 4 : Stop