View Code of Problem 23

#include<stdio.h>
#include<math.h>
#include<string.h>
int main() {
	int m;
	long int a[90];
	a[1] = 1;
	a[2] = 2;
	int i;
	for (i = 3; i <= 90; i++) {
		a[i] = a[i - 2] + a[i - 1];
	}
	while (scanf("%d", &m) != EOF) {
		if (m == 0)
			break;
		printf("%ld\n", a[m]);
	}
	return 0;
}