### What is that ?

##### An arithmetic operator is a symbol that allows us to make mathematical operations like addition, subtraction, multiplication and division.

#### How to use them in `c`

?

Let’s know the basic ones first

Symbol | Meaning |
---|---|

`+` |
Addition |

`-` |
Subtraction |

`*` |
Multiplication |

`/` |
Division |

To use them is very simple, we saw an introduction on our last lesson, is pretty much the same as you do in your primary school:

###### Don’t pay attention to the comments

`//`

, we are going to explain them in further lessons

Let’s do a something a little bit more complex, let’s go and calculate the average of 5 random numbers

We need to notice that here in `c`

and other programing languages, the arithmetical operators have rules of precedence, the multiplication and the division will execute first than the addition and the subtraction, that means: