- C++ Introduction
- C++ Getting Started
- C++ Syntax
- C++ Output (Print Text)
- C++ Comments
- C++ Variables
- C++ Declare Multiple Variables
- C++ Identifiers
- C++ User Input
- C++ Data Types
- C++ Operators
- C++ Strings
- C++ Math
- C++ Booleans
- C++ Conditions
- C++ Switch
- C++ While Loop
- C++ For Loop
- C++ Break And Continue
- C++ Arrays
- C++ References
- C++ Pointers
- C++ Functions
- C++ Function Overloading
- C++ OOP
- C++ Classes And Objects
- C++ Class Methods
- C++ Constructors
- C++ Access Specifiers
- C++ Encapsulation
- C++ Inheritance
- C++ Multilevel Inheritance
- C++ Multiple Inheritance
- C++ Inheritance Access
- C++ Polymorphism
- C++ Files
- C++ Exceptions
- C++ How To Add Two Numbers
C++ Operators
C++ Operators
Operators are used to perform operations on variables and values.
In the example below, we use the +
operator to add together two values:
Example
Although the +
operator is often used to add together two values, like in the example above, it can also be used to add together a variable and a value, or a variable and another variable:
Example
int sum2 = sum1 + 250; // 400 (150 + 250)
int sum3 = sum2 + sum2; // 800 (400 + 400)
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C++ Assignment Operators
Assignment operators are used to assign values to variables.
In the example below, we use the assignment operator (=
) to assign the value 10 to a variable called x:
Example
The addition assignment operator (+=
) adds a value to a variable:
Example
x += 5;
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C++ Comparison Operators
Comparison operators are used to compare two values.
Note: The return value of a comparison is either true (1
) or false (0
).
In the following example, we use the greater than operator (>
) to find out if 5 is greater than 3:
Example
int y = 3;
cout << (x > y); // returns 1 (true) because 5 is greater than 3
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C++ Logical Operators
Logical operators are used to determine the logic between variables or values:
Operator | Name | Description | Example | |
---|---|---|---|---|
&& | Logical and | Returns true if both statements are true | x < 5 && x < 10 | |
|| | Logical or | Returns true if one of the statements is true | x < 5 || x < 4 | |
! | Logical not | Reverse the result, returns false if the result is true |
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C++ Arithmetic Operators
Arithmetic operators are used to perform common mathematical operations.
Operator | Name | Description | Example | |
---|---|---|---|---|
+ | Addition | Adds together two values | x + y | |
- | Subtraction | Subtracts one value from another | x - y | |
* | Multiplication | Multiplies two values | x * y | |
/ | Division | Divides one value by another | x / y | |
% | Modulus | Returns the division remainder | x % y | |
++ | Increment | Increases the value of a variable by 1 | ++x | |
-- | Decrement | Decreases the value of a variable by 1 | --x |
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