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6 years ago
## fibonacci
### Instructions
Write an **recursive** function that returns the value of fibonacci sequence matching the index passed as parameter.
The first value is at index `0`.
The sequence starts this way: 0, 1, 1, 2, 3 etc...
A negative index will return `-1`.
`for` is **forbidden** for this exercise.
6 years ago
### Expected function
```go
package piscine
func Fibonacci(index int) int {
}
```
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### Usage
Here is a possible program to test your function :
```go
package main
import (
"fmt"
piscine ".."
)
func main() {
arg1 := 4
fmt.Println(piscine.Fibonacci(arg1))
}
```
And its output :
```console
student@ubuntu:~/[[ROOT]]/test$ go build
student@ubuntu:~/[[ROOT]]/test$ ./test
3
student@ubuntu:~/[[ROOT]]/test$
```