View Code of Problem 23

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