View Code of Problem 23

#include<iostream>
using namespace std;

int main()
{
    long long int a[100],m;
    a[1]=1,a[2]=2;
    for(int i=3;i<100;i++)
    {
        a[i]=a[i-1]+a[i-2];
    }
    while(cin>>m)
    {
        if(m==0)break;
        cout<<a[m]<<endl;
    }
    return 0;
}