single line

In C++, comments provide explanations or annotations in the source code. They are ignored by the compiler, meaning they do not affect how the program is executed. Comments are beneficial for code readability and maintainability. There are two types of comments in C++:

Single-line comments

A single-line comment begins with two forward slashes //. The compiler will ignore everything to the right of // on that line.

#include <iostream>
int main() {
   std::cout << "Hello, World!" << std::endl;  // This is a comment.
   return 0;
}

In this example, // This is a comment. is a single-line comment.