View Code of Problem 23

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