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6 years ago
## basicatoi
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### Instructions
- Write a function that simulates the behaviour of the `Atoi` function in Go. `Atoi` transforms a number defined as a `string` in a number defined as an `int`.
- `Atoi` returns `0` if the `string` is not considered as a valid number. For this exercise **only valid** `string` will be tested. They will only contain one or several digits as characters.
- For this exercise the handling of the signs `+` or `-` does not have to be taken into account.
- This function will **only** have to return the `int`. For this exercise the `error` return of `Atoi` is not required.
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### Expected function
```go
func BasicAtoi(s string) int {
}
```
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### Usage
Here is a possible program to test your function :
```go
package main
import (
"fmt"
"piscine"
)
func main() {
fmt.Println(piscine.BasicAtoi("12345"))
fmt.Println(piscine.BasicAtoi("0000000012345"))
fmt.Println(piscine.BasicAtoi("000000"))
}
```
And its output :
```console
$ go run .
12345
12345
0
$
```
### Notions
- [strconv/Atoi](https://golang.org/pkg/strconv/#Atoi)