从二进制文件写入和读取

Question

我试图学习如何写入二进制文件，然后将信息读回变量。我试图在c3＆amp;中制作信息c4和c1＆amp; c2从二进制文件中读取。我已经搜索并尝试了好几个小时，但我无法弄清楚我做错了什么。请帮忙。

#include <cstring>
#include <iostream>
#include <fstream>
using namespace std;

struct Cat {
    char name[50];
    int age;
};

//----- TEXT I/O -----//
void display(Cat& cat) {
    cout << cat.name << endl;
    cout << cat.age << endl;
}

//----- BINARY I/O -----//
void writeBinaryData(ofstream& binaryFile, Cat& cat) {
    binaryFile.write(cat.name, sizeof(char[50]));
    binaryFile.write(reinterpret_cast<char*>(&cat.age), sizeof(int));
}

void readBinaryData(ifstream& binaryFile, Cat& cat) {
    binaryFile.read(cat.name, sizeof(char[50]));
    binaryFile.read(reinterpret_cast<char *>(&cat.age), sizeof(int));
}

int main() {
    Cat c1, c2, c3, c4;
    // c1's name is Ben and age is 2
    strcpy(c1.name, "Ben");
    c1.age = 2;
    // c2's name is Willard and age is 3
    strcpy(c2.name, "Willard");
    c2.age = 3;
    // display c1 & c2
    display(c1);
    display(c2);
    // read and write c1 & c2 to binary data file
    ofstream binOut("catfarm.bin", ios::out | ios::binary);
    writeBinaryData(binOut, c1);
    writeBinaryData(binOut, c2);
    // read from binary file into c3 & c4
    ifstream binIn("catfarm.bin", ios::in | ios::binary);
    readBinaryData(binIn, c3);
    readBinaryData(binIn, c4);
    display(c3);
    display(c4);
    return 0;
}

现在输出如下：

Ben
2
Willard
3

32701

32701

但它应该是这样的：

Ben
2
Willard
3
Ben
2
Willard
3