BEST SITE FOR WEB DEVELOPERS
HTML CSS JAVASCRIPT SQL PHP PYTHON JAVA KOTLIN GO C C++ C# AI W3.CSS TypeScript HOW TO More 🔍 ◑ REFERENCES EXERCISES

C++ Tutorial

C++ HOME C++ Intro C++ Get Started C++ Syntax
Syntax Statements
C++ Output
Print Text New Lines
C++ Comments C++ Variables
Declare Variables Multiple Variables Identifiers Constants
C++ User Input C++ Data Types
Basic Data Types Numbers Booleans Characters Strings
C++ Operators
Arithmetic Assignment Comparison Logical
C++ Strings
Strings Intro Concatenation Numbers and Strings String Length Access Strings Special Characters User Input Strings Omitting Namespace C-Style Strings
C++ Math C++ Booleans
Boolean Values Boolean Expressions
C++ Conditions
if else else if Short hand if..else
C++ Switch C++ While Loop
While Loop Do/While Loop
C++ For Loop
For Loop Nested Loops The foreach Loop
C++ Break/Continue C++ Arrays
Arrays Arrays and Loops Omit Array Size Get Array Size Multidimensional Arrays
C++ Structures C++ Enums C++ References
Create References Memory Address
C++ Pointers
Create Pointers Dereferencing Modify Pointers

C++ Functions

C++ Functions C++ Function Parameters
Parameters/Arguments Default Parameter Multiple Parameters Return Values Pass By Reference Pass Arrays
C++ Function Overloading C++ Scope C++ Recursion

C++ Classes

C++ OOP C++ Classes/Objects C++ Class Methods C++ Constructors C++ Access Specifiers C++ Encapsulation C++ Inheritance
Inheritance Multilevel Inheritance Multiple Inheritance Access Specifiers
C++ Polymorphism C++ Files C++ Exceptions C++ Date

C++ How To

Add Two Numbers Random Numbers

C++ Reference

C++ Reference C++ Keywords C++ <iostream> C++ <fstream> C++ <cmath> C++ <string> C++ <cstring> C++ <ctime>

C++ Examples

C++ Examples C++ Compiler C++ Exercises C++ Quiz C++ Certificate

C++ Language. W3Schools in English. Lessons for beginners

Ua Es De

C++ Comments

❮ Prev Next ❯

C++ Comments

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!";
Try it Yourself »

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

Example

cout << "Hello World!"; // This is a comment
Try it Yourself »

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!";
Try it Yourself »

Single or multi-line comments?

It is up to you that you want to use. Normally, we use // for short comments, and /* */ for longer.

❮ Prev Next ❯

✍ Comments