C_Operators.c

Here's the updated code with comments and explanations:

#include <stdio.h>  // Includes the standard input-output library for input-output functions

int main() {  // Main function where the program execution starts
    int a = 10, b = 20;  // Declares two integer variables 'a' and 'b', assigns them the values 10 and 20 respectively
    int sum = a + b;  // Declares an integer variable 'sum' and stores the result of 'a + b'

    // Prints the value of 'sum' using the %d format specifier for integers
    printf("Sum: %d\n", sum);  // Outputs the result of 'a + b' to the console

    return 0;  // Returns 0, indicating successful program execution
}

Explanation:

• int a = 10, b = 20;: This line declares two integer variables, a and b, and initializes them with the values 10 and 20, respectively.
• int sum = a + b;: This declares a new integer variable sum and stores the result of a + b (which is 30) in it.
• printf("Sum: %d\n", sum);: This line prints the sum of the two numbers. The %d format specifier is used to print the integer value of sum.
• return 0;: This returns 0, signaling that the program executed successfully.

This program performs a simple addition of two integer variables a and b, calculates their sum, and prints the result. It demonstrates how to perform arithmetic operations and display the result using printf.