TheAlgorithms-C/math/fibonacci.c

#include <stdio.h>

// Fibonnacci function
int fib(int number)
{
    if (number == 1 || number == 2)
        return 1;
    else
        return fib(number - 1) + fib(number - 2);
}

int main()
{
    int number;

    // Asks for the number that is in n position in Fibonnacci sequence
    printf("Number: ");
    scanf("%d", &number);

    printf("%d \n", fib(number));

    return 0;
}