Gammal Tech
//www.gammal.tech
#include <iostream>
using namespace std;
int vis[100];
int fib (int n){
-if( n <= 1)
--return n;
-if( vis[n] != 0 )
--return vis[n];
-return vis[n] = fib(n-1) + fib(n-2);
}
int main() {
-while(1){
--int n;
--cout<<"Enter a number: ";
--cin>>n;
--cout<< fib(n) <<endl;
-}
}