一个简单的c++二进制文件正在工作，但为什么我不能用enter退出程序

Question

我在这里找到了这个例子：https://www.tutorialspoint.com/reading-and-writing-binary-file-in-c-cplusplus

我把它复制到我的Visual Studio 2019中。结果很好，但我不能用Enter键退出程序。我必须按ESC等待它，然后程序退出它自己；以代码-103741819退出"；

#include<iostream>
#include<fstream>
#include<string>
using namespace std;
struct Student {
int roll_no;
string name;
};
int main() {
ofstream wf("student.dat", ios::out | ios::binary);
if (!wf) {
cout << "Cannot open file!" << endl;
return 1;
}
Student wstu[3];
wstu[0].roll_no = 1;
wstu[0].name = "Ram";
wstu[1].roll_no = 2;
wstu[1].name = "Shyam";
wstu[2].roll_no = 3;
wstu[2].name = "Madhu";
for (int i = 0; i < 3; i++)
wf.write((char*)&wstu[i], sizeof(Student));
wf.close();
if (!wf.good()) {
cout << "Error occurred at writing time!" << endl;
return 1;
}
ifstream rf("student.dat", ios::out | ios::binary);
if (!rf) {
cout << "Cannot open file!" << endl;
return 1;
}
Student rstu[3];
for (int i = 0; i < 3; i++)
rf.read((char*)&rstu[i], sizeof(Student));
rf.close();
if (!rf.good()) {
cout << "Error occurred at reading time!" << endl;
return 1;
}
cout << "Student's Details:" << endl;
for (int i = 0; i < 3; i++) {
cout << "Roll No: " << wstu[i].roll_no << endl;
cout << "Name: " << wstu[i].name << endl;
cout << endl;
}
return 0;
}

Answer 1

以上评论确实值得注意，必须加以考虑。另一种方法是将名称定义为字符指针，如：

char *name;