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Comments in C++ | Basics of C++ - Software Development PDF Download

Comments can be used to explain C++ code, and to make it more readable. It can also be used to prevent execution when testing alternative code. Comments can be singled-lined or multi-lined.

Single-line Comments

Single-line comments start with two forward slashes (//).
Any text between // and the end of the line is ignored by the compiler (will not be executed).
This example uses a single-line comment before a line of code:
Example:

// This is a comment

cout << "Hello World!";

This example uses a single-line comment at the end of a line of code:

Example: cout << "Hello World!"; // This is a comment

C++ Multi-line Comments

Multi-line comments start with /* and ends with */.
Any text between /* and */ will be ignored by the compiler:
Example:

/* The code below will print the words Hello World!

to the screen, and it is amazing */

cout << "Hello World!";

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