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6 years ago
## swap
6 years ago
### Instructions
3 years ago
- Write a function that takes two **pointers to an `int`** (`*int`) and swaps their contents.
6 years ago
### Expected function
```go
func Swap(a *int, b *int) {
}
```
6 years ago
### Usage
Here is a possible program to test your function :
```go
package main
import (
"fmt"
"piscine"
)
func main() {
a := 0
b := 1
piscine.Swap(&a, &b)
fmt.Println(a)
fmt.Println(b)
}
```
And its output :
```console
$ go run .
1
0
$
```
### Notions
- [Pointers](https://golang.org/ref/spec#Pointer_types)