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subjects/countstars/README.md

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+## CountStars
+
+### Instructions
+Write a function called CountStars that counts the stars up to a number given as an argument.
+- If the number is negative or equal to 0, return "`No stars`"
+- No need to manage overflow.
+
+The Library strconv is allowed.
+
+### Expected Function
+
+```go
+func CountStars(num int) string {
+
+}
+```
+### Usage
+
+Here is a possible program to test your function :
+
+```go
+import (
+	"fmt"
+	"strconv"   
+)
+
+func main() {
+	fmt.Println(CountStars(5))
+	fmt.Println(CountStars(4))
+	fmt.Println(CountStars(-1))
+	fmt.Println(CountStars(1))
+}
+```
+And its output :
+
+
+```console
+$ go run . 
+1 star...2 stars...3 stars...4 stars...5 stars
+1 star...2 stars...3 stars...4 stars
+No stars
+1 star
+```