View Code of Problem 23

#include <stdio.h>
#include <string.h>　
int main(int argc, char *argv[])
{
	long long a[91];
	a[1]=1;
	a[2]=2; 
	for(int i = 3;i<=90;i++){
		a[i]=a[i-1]+a[i-2];
	}
	int n;
	while(scanf("%d",&n)!=EOF){
		if(n==0)break;
		printf("%lld\n",a[n]);
	}
	return 0;
}