C++猴子偷桃子算法

#include <iostream>
using namespace std;

int GetPeach(int nDay)
{
 if(nDay == 11)
 {
  return 1;
 }

 return  (GetPeach(nDay + 1)  + 1) * 2;
}
void main()
{
 int nTotal = 0;
 nTotal = GetPeach(1);
 cout << nTotal << endl;
 cout << "Hello World" << endl;
 int wait;
 cin >> wait;
}