n 구기
~cpp
#include <iostream>
using namespace std;
const int Max = 5000;
int pibo(int n);
void main()
{
int num;
cout << " n 구. n 값 . : ";
cin >> num;
pibo(num);
cout << " " << num << " " << pibo(num) << ".\n";
}
int pibo(int n)
{
int arr[Max];
arr[0]=1;
arr[1]=2;
for(int i=2; i < n; i++)
arr[i] = arr[i-1] + arr[i-2];
return arr[n-1];
}










