#include <stdio.h>
int ft_fibonacci(int index)
{
if (index < 0)
return (-1);
else if (index == 0)
return (0);
else if (index == 1)
return (1);
return (ft_fibonacci(index - 1) + ft_fibonacci(index - 2));
}
int main(void)
{
int index;
index = 18;
printf("Fibonacci de : %d", index);
printf(" : %d\n", ft_fibonacci(index));
return (0);
}
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