View Code of Problem 23

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