Unit 5 Operators

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

int x = 10;»

The addition assignment operator (+=) adds a value to a variable:

Example

int x = 10;

x += 5;Try it Yourself »

A list of all assignment operators:

=

x = 5 is the same as x = 5

Try it »

+=

x += 3 is the same as x = x + 3

Try it »

-=

x -= 3 is the same as x = x - 3

Try it »

*=

x *= 3 is the same as x = x * 3

Try it »

/=

x /= 3 is the same as x = x / 3

Try it »

%=

x %= 3 is the same as x = x % 3

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 x = 5;

int y = 3;

cout << (x > y); // returns 1 (true) because 5 is greater than 3

A list of all comparison operators:

Equal to (==)

x == y

Not equal (!=)

x != y

Try it »

Greater than (>)

x > y

Less than (<)

x < y

Greater than or equal to (>=)

x >= y

Less than or equal to (<=)

x <= y

Logical Operators

Logical operators are used to determine the logic between variables or values:

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

!(x < 5 && x < 10)