The function is a block of statements that runs when it is called. The world of programming cannot exist without functions since they: 
- are reusable.
- can test a particular part of your code.
- can be applied to a number of cases if you change the parameters.

Let’s go deep into it. For instance, you have decided to program the cat. It should say "meow!":

Easy implementation. Repeating output will overload your code. However, what should we do if the cat must say meow twice or 20 times in different periods?
In such a situation, we can use functions. To create a function, you need to specify the keyword `void`, the name of the function, followed by parentheses `()`:

```
void myFunc() {
    // code to be executed
}
```

Let's create the function `sound()` for the cat, which will print `"meow!"`:

```
void sound() {
    cout << "meow!" << endl;
}
```

To create a function, you need to specify the keyword

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Basics of Functions