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# What is a unary operator? Educative Answers Team

Unary operators are those operators that require a single operand for computations.

## Example

• minus -
• increment ++
• decrement --
• not ~

## Minus

The minus operator is used to represent a negative value.

int a = -10 // Here - is used to represent a negative value




## Increment

#### Prefix increment

The prefix increment operator precedes the operand and increments the value before using it, e.g., ++temp.

int a = 10;
// it increments a by one
// value
// and assigns its value to b
int b = ++a;// b = 11


#### Postfix increment

The postfix increment operator follows the operand and increments the value after using it, e.g., temp++.

int a = 10;
// it assigns the value of a to b
// and then increments the value of a by one
int b = a++;// b = 10
// a = 11




## Decrement

#### Prefix decrement

The prefix decrement operator precedes the operand and decrements the value before using it, e.g., --temp.

int a = 10;
// it decrements a by one
// value
// and assigns its value to b
int b = --a;// b = 9


#### Postfix decrement

The postfix decrement operator follows the operand and decrements the value after using it, e.g., temp--.

int a = 10;
// it assigns the value of a to b
// and then decrements the value of a by one
int b = a--;// b = 10
// a = 9


## Not

The not operator is a bitwise operator that flips the bits of a value. The bits that are set will be unset and vice versa.

int a = 12; // (00001100)
int b = ~a; // (11110011)



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