Comments in C++
Program comments are explanatory statements that you can include in the C++ code. These comments help anyone reading the source code. All programming languages allow for some form of comments. C++ supports single-line and multi-line comments. All characters available inside any comment are ignored by C++ compiler.
C++ comments start with /* and end with */.
For example:
/* This is a comment */
/* C++ comments can also
* span
multiple lines */
A comment can also start with //, extending to the end of the line.
For example:
#include <iostream>
using namespace std;
main()
{
cout << “Hello World”; // prints Hello World
return 0;
}
When the above code is compiled, it will ignore // prints Hello World and final executable will produce the following result:
Hello World
Within a /* and */ comment, // characters have no special meaning. Within a // comment, /* and */ have no special meaning. Thus, you can “nest” one kind of comment within the other kind.
For example:
/* Comment out printing of Hello World:
cout << “Hello World”; // prints Hello World
*/
