# Let add operator to our world

C OperatorsAn operator is a symbol which performs certain operation on values or variables.

The operators in C can be classified as:

## Arithmetic Operators

An arithmetic operator performs mathematical operations such as addition, subtraction and multiplication on numerical values (constants and variables).

Operator | Meaning of Operator |
---|---|

+ | addition |

- | subtraction |

* | multiplication |

/ | division |

% | remainder after division( modulo division) |

Below program demonstrate the **use** of arithmetic operator :

## Increment and decrement Operator

Operator | Meaning of Operator |
---|---|

Increment ++ | increases the value by 1 |

Decrement -- | decreases the value by 1 |

Below program demonstrate the **use** of Increment and decrement Operator :

## Assignment Operators

An assignment operator is used for assigning a value to a variable. The most common assignment operator is =

Operator | Example | Same as |
---|---|---|

= | a = b | a =b |

+= | a += b | a = a+b |

-= | a -= b | a = a-b |

*= | a *= b | a = a*b |

%= | a %= b | a = a%b |

Below program demonstrate the **use** of Assignment Operators :

## Relational(or logical) Operators

A relational operator checks the relationship between two operands. **If the relation is true,
it returns 1; if the relation is false, it returns value 0**.

Relational operators are used in decision making and loops (We will read in next chapter).

Operator | Description | Example |
---|---|---|

== | Checks if the value of two operands is equal or not, if yes then condition becomes true. | (A == B) is not true. |

!= | Checks if the value of two operands is equal or not, if values are not equal then condition becomes true. | (A != B) is true. |

> | Checks if the value of left operand is greater than the value of right operand, if yes then condition becomes true. | (A > B) is not true. |

< | Checks if the value of left operand is less than the value of right operand, if yes then condition becomes true. | (A < B) is true. |

>= | Checks if the value of left operand is greater than or equal to the value of right operand, if yes then condition becomes true. | (A >= B) is not true. |

<= | Checks if the value of left operand is less than or equal to the value of right operand, if yes then condition becomes true. | (A <= B) is true. |

&& | Called Logical AND operator. If both the operands are non zero then then condition becomes true. | (A && B) is true. |

|| | Called Logical OR Operator. If any of the two operands is non zero then then condition becomes true. | (A || B) is true. |

! | Called Logical NOT Operator. Use to reverses the logical state of its operand. If a condition is true then Logical NOT operator will make false. | !(A && B) is false. |

Below program demonstrate the **use** of Relational Operators :

Below program demonstrate the **use** of logical Operators :

TASKS

- Ask two number from user and calculate their Quotient and Remainder.