Write a simple C program that adds two numbers and displays the result on Linux

Certainly! Below is a simple C program that adds two numbers and displays the result. You can compile and run this program on a Linux system.

add_numbers.c

#include <stdio.h>

int main() {
    float num1, num2, sum;

    // Ask user for input
    printf("Enter first number: ");
    scanf("%f", &num1);
    
    printf("Enter second number: ");
    scanf("%f", &num2);
    
    // Calculate sum
    sum = num1 + num2;

    // Display the result
    printf("Sum: %.2f\n", sum);

    return 0;
}

Steps to Compile and Run the Program

1. Open a Terminal on your Linux system.

2. Create a new file named add_numbers.c using a text editor, such as nano or vim.

   nano add_numbers.c
   

3. Copy and paste the code above into the file and save it. In nano, you can save the file by pressing CTRL + O, then Enter, and exit with CTRL + X.

4. Compile the program using gcc (GNU Compiler Collection).

   gcc add_numbers.c -o add_numbers
   

5. Run the compiled program.

   ./add_numbers
   

6. Follow the prompts to enter the numbers to be added.

Example Output

Enter first number: 5
Enter second number: 10.5
Sum: 15.50

This program uses float to allow for decimal number input as well. You can change float to int if you only want to work with integer values.