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Fibonacci's sequence using a recursive function


New Coder

I was to write a program showing the value of an n element in the Fibonacci's sequence using a recursive function.

In Fibonacci's sequence, each number of the sequence is the sum of the two previous numbers. Thus, the sequence starts like this: 0, 1, 1, 2, 3, 5 ...

So far my code looks like this:

[CODE lang="c" title="my code fibonacci"]#include <stdio.h>
#include <stdlib.h>

int ft_fibonacci(int nb)
if(nb < 0){
return (-1);

if(nb == 0){
return (0);

if(nb == 1){
return (1);
return (ft_fibonacci(nb-1) + ft_fibonacci(nb-2));

int main(void)
printf("%d", ft_fibonacci(10));

return (0);

However ! The number one being repeated 2 times and the second time it should repeat 2 instead of 1, the result is also (the element of the sequence - 1).

Can you please help me resolve this problem?

Many thanks in advance ! :))
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