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6 years ago
## isupper
6 years ago
### Instructions
Write a function that returns `true` if the `string` passed in parameter only contains uppercase characters, and that returns `false` otherwise.
6 years ago
### Expected function
```go
func IsUpper(s string) bool {
}
```
6 years ago
### Usage
Here is a possible program to test your function :
```go
package main
import (
"fmt"
"piscine"
)
func main() {
fmt.Println(piscine.IsUpper("HELLO"))
fmt.Println(piscine.IsUpper("HELLO!"))
}
```
And its output :
```console
$ go run .
true
false
$
```