是不是我下的VC++2010有问题还是程序没写明白？

#include<iostream>
using namespace std;

class person
{
public:
    int heart;
    char *name;
    int run()
    {
        heart=heart+20;
        return heart;
    }
};
void main()
{
    int iRunStop;
    person ZhangSan;
    ZhangSan.name="张三";
    ZhangSan.heart=72;
    cout<<"姓名:"<<ZhangSan.name<<endl;
    cout<<"心跳:"<<ZhangSan.heart<<endl;
    iRunStop=ZhangSan.run();
    cout<<"跑后心跳"<<iRunStop<<endl;
}