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## findprevprime
### Instructions
Write a function that returns the first prime number that is equal or inferior to the `int` passed as parameter.
If there are no primes inferior to the `int` passed as parameter the function should return 0.
### Expected function
```go
func FindPrevPrime(nb int) int {
}
```
### Usage
4 years ago
Here is a possible program to test your function :
```go
package main
import (
"fmt"
piscine ".."
)
func main() {
fmt.Println(piscine.FindPrevPrime(5))
fmt.Println(piscine.FindPrevPrime(4))
}
```
And its output :
```console
student@ubuntu:~/piscine-go/test$ go build
student@ubuntu:~/piscine-go/test$ ./test
5
3
student@ubuntu:~/piscine-go/test$
```