In a C+ + program, two slash marks (//) indicate:

A.

The end of a statement

B.

The beginning of a comment

C.

The end of the program

D.

The beginning of a block of code

The option (B) is the correct answer.

Explanation:

In C+ + the / / (two slash marks) indicating the beginning of a comment. The two slash marks (//) comment the single line in a program. To use two slash marks (//) comment we simply write / / in which line we have to make comment.

following are the example of code in c++

#include / / header file

void main () / / main method

{

cout<< " india"; / / print india

}

here / / indicating the beginning of a comment.