#include <stdio.h>

/* write a set of functions to calculate the Nth fibonacci number */

int fib (int i) {

int a, b;

for (a = 0, b = 1; i--; ) {

/* add b to a */

a += b;

/* swap a and b (with a triple XOR) */

a ^= b; b ^= a; a ^= b;

}

return a;

}

int main (void) {

int i;

for (i = 0; i < 10; i++)

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

return 0;

}