Which symbols are used to indicate a comment in C++?

In C++, comments are indicated using specific symbols that help programmers write notes or explanations in the code without affecting its execution. The correct choice identifies the two types of comments available in C++.

The single-line comment is denoted by two forward slashes (//). Everything that follows these slashes on the same line is treated as a comment and ignored by the compiler. This is useful for brief comments or notes that are relevant to a specific line of code.

The multi-line comment starts with a forward slash and an asterisk (/) and ends with an asterisk and a forward slash (/). This allows programmers to include longer comments that can span multiple lines, making it easier to document complex sections of code or explain intricate logic without concern for line breaks.

Together, these two forms of comments enable effective documentation directly in the source code, aiding in readability and maintainability.