对称平方数

#include <stdio.h>
#include <stack>
#include <vector>
#include <iostream>
#include <string>
#include <sstream>
using namespace std;

string Int_to_String(int n);

int main()
{
    /*
    int n = 12345;
    string s = Int_to_String(n);

    cout << s <<endl;
    */
    int res;
    string sres;
    stack<char> S;
    vector<char> vc;
    int flag;
    for (int n=0;n<256;n++)
    {
        res = n*n;
        flag = 1;
        sres = Int_to_String(res);
        
        for (int i=0;i<sres.size();i++)
        {
            vc.push_back(sres[i]);
        }
        
        vector<char>::iterator it = vc.end();
        for (int j=0;j<vc.size();j++)
        {
            if (*(--it) != sres[j])
            {
                vc.clear();
                flag = 0;
                break;
            }
        }

        if (flag==1)
        {
            /*
            //把n*n的结果打印了，应该是打印n
            for (int k=0;k<vc.size();k++)
            {
                cout << vc[k];
            }
            */
            if(n)
                cout << n <<endl;
        }
        vc.clear();
        
    }

    
    
    return 0;

}


string Int_to_String(int n)

{
    
    ostringstream stream;
    
    stream << n; //n为int类型
    
    return stream.str();
    
}