使用C++将两个矩阵写入.dat文件

int matrix1[3][3] = {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}};
int matrix2[3][3] = {{9, 8, 7}, {6, 5, 4}, {3, 2, 1}};

#include <fstream>

std::ofstream outfile("matrix.dat", std::ios::binary);

if (outfile.is_open()) {
    // 写入第一个矩阵
    outfile.write(reinterpret_cast<char*>(matrix1), sizeof(matrix1));
    
    // 写入第二个矩阵
    outfile.write(reinterpret_cast<char*>(matrix2), sizeof(matrix2));
    
    // 关闭文件流
    outfile.close();
} else {
    // 文件打开失败处理
    std::cout << "无法打开文件" << std::endl;
}

#include <iostream>
#include <filesystem>

std::filesystem::path filepath = "matrix.dat";
if (std::filesystem::exists(filepath)) {
    std::cout << "文件写入成功" << std::endl;
    std::cout << "文件大小：" << std::filesystem::file_size(filepath) << " 字节" << std::endl;
} else {
    std::cout << "文件写入失败" << std::endl;
}