add comment in c/c++

To add a comment in C++, you can use the double forward slash "//" followed by your comment. The comment will be ignored by the compiler and is used to provide explanations or notes within your code. Here are the steps to add a comment in C++:

1. Identify the line or section of code where you want to add the comment.
2. Place the double forward slash "//" at the beginning of the line or after the code you want to comment.
3. Write your comment after the "//" symbol.

Here's an example:

#include <iostream>

int main() {
    int a = 10;  // This is a variable declaration and initialization
    int b = 20;  // Another variable declaration and initialization

    // Adding the values of a and b and storing the result in c
    int c = a + b;

    std::cout << "The sum of a and b is: " << c << std::endl;  // Outputting the result

    return 0;
}

In the example above, comments are used to provide explanations for each step of the code. They help to make the code more readable and understandable for both the developer and other readers of the code.