c加加小问题 学生代码出错

Question

#include
using namespace std;
struct student
{string name;
int num;
int age;
char sex;
};
int main()
{student stud[3];
int i;
ifstream infile("stud.dat",ios::binary);
if(!infile)
{cerr<<"open error!"<<endl;
abort();
}
for(i=0;i<3;i++)
infile.read((char*)&stud[i],sizeof(stud[i]));
infile.close();
for(i=0;i<3;i++)
{cout<<"NO."<<i+1<<endl;
cout<<"name:"<<stud[i].name<<endl;
cout<<"num:"<<stud[i].num<<endl;
cout<<"age:"<<stud[i].age<<endl;
cout<<"sex:"<<stud[i].sex<<endl;
}
return 0;
}

Answer 1

#include <iostream>
#include <fstream>

using namespace std;