View Code of Problem 23

#include<string.h>
#include<math.h>
#include<stdio.h>
#include<ctype.h>
int main()
{
	long long int a[100]={1,2},i,m;
	for(i=2;i<90;i++)
	{
		a[i]=a[i-1]+a[i-2];
	}
	while(scanf("%d",&m),m!=0)
	{
		printf("%lld\n",a[m-1]);
	}
	return 0;
 }