Untitled

#include "stdio.h"

// To create a function, two steps:
// 1. Declearation `{output_type} {name of the function}({input args})` `args: type name` int x
// 2. Definition

int fib(int x) {
    // init
    if (x == 1) return 1; // fib(1)
    else if (x == 2) return 1; // fib(2)

    // recur
    return fib(x-1) + fib(x-2);
}

int main() {
    printf("%d\n", fib(6));
    return 0;
}