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## compare
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### Instructions
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Écrire une fonction qui se comporte comme la fonction [`Compare`](https://golang.org/pkg/strings/#Compare).
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### Fonction attendue
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```go
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func Compare(a, b string) int {
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}
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```
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### Utilisation
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Voici un éventuel [programme](TODO-LINK) pour tester votre fonction :
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```go
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package main
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import (
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"fmt"
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piscine ".."
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)
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func main() {
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fmt.Println(piscine.Compare("Hello!", "Hello!"))
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fmt.Println(piscine.Compare("Salut!", "lut!"))
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fmt.Println(piscine.Compare("Ola!", "Ol"))
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}
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```
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Et son résultat :
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```console
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student@ubuntu:~/piscine/test$ go build
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student@ubuntu:~/piscine/test$ ./test
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0
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-1
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1
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student@ubuntu:~/piscine/test$
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```
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