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## itoa
### Instructions
- Write a function that simulates the behavior of the `Itoa` function in Go. `Itoa` transforms a number represented as an`int` in a number represented as a `string` .
- For this exercise the handling of the signs + or - **does have** to be taken into account.
## Expected function
```go
func Itoa(n int) string {
}
```
### Usage
Here is a possible program to test your function :
```go
package main
import (
"fmt"
"piscine"
)
func main() {
fmt.Println(piscine.Itoa(12345))
fmt.Println(piscine.Itoa(0))
fmt.Println(piscine.Itoa(-1234))
fmt.Println(piscine.Itoa(987654321))
}
```
And its output :
```console
$ go run .
12345
0
-1234
987654321
$
```
### Notions
- [strconv/Itoa ](https://pkg.go.dev/strconv#Itoa )
