View Code of Problem 23

#include <stdio.h>
int main(){
	int a[90],i,m;
	a[0]=1;
	a[1]=2;
	for(i=0;i<=87;i++){
		a[i+2]=a[i]+a[i+1];
	}
	do{
		scanf("%d",&m);
		printf("%d\n",a[m-1]);
	}while(m!=0);

	return 0;

}