大家看看这个错误是为什么？
有如下的一段代码：
#include<iostream>#include<fstream>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]));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<<endl;}return 0;}