请帮忙指出如下C++.net程序中的错误
// a4.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include <iostream>
using namespace std;

void main()

int _tmain(int argc, _TCHAR* argv[])
{   int digit,num;
    cout << "输入一个整数:";cin >> num;
    cout << "反向显示结果:";
    do
    {    digit=num % 10;
         num=num/10;
         cout << digit;
    } while (num!=0);
    cout << endl;
    return 0;
}

非常感谢ltyjyufo,我调试的结果如下:
// a7.cpp : Defines the entry point for the console application.
//


#include <stdafx.h>
#include <iostream>
using namespace std;

void main(int argc,char* argv[])
{   int digit,num;
    cout << "输入一个整数:";cin >> num;
    cout << "反向显示结果:";
    do
    {    digit=num % 10;
         num=num/10;
         cout << digit;
    } while (num!=0);
    cout << endl;