C++ 记录文件复制filecopy

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

int readAudioDateToBufferMemory(std::string& destFileName, std::string& resFileName)
{
    // 读取resFileName文件
    std::ifstream infile(resFileName, std::ios::in | std::ios::binary);
    if (!infile.is_open())
    {
        return 0;
    }

    infile.seekg(0, std::ios::end);
    int p_nLen = infile.tellg();

    infile.seekg(0, std::ios::beg);
    char* p_pAudio = new char[p_nLen];

    try
    {
        infile.read(p_pAudio, p_nLen);
    }
    catch (std::exception& e)
    {
        infile.close();
        return 0;
    }
    infile.close();

    // 写入destFileName文件
    ofstream outFile(destFileName, ios::out | ios::binary | ios_base::app);
    if (!outFile.is_open())
    {
        return 0;
    }
    outFile.write(p_pAudio, p_nLen);
    outFile.close();

    return 1;
}

int main(int argc, char const* argv[])
{
    std::string resFileName = "1.txt";     // 1 2 3 4 5 6 7 8 9
    std::string destFileName = "2.txt";    // 1 1 1 
    int flag = readAudioDateToBufferMemory(destFileName, resFileName);
    if (0 == flag)
    {
        // 失败
    }
    else
    {
        // 成功
    }
    // 1 2 3 4 5 6 7 8 9
    // 1 1 1 1 2 3 4 5 6 7 8 9

    return 0;
}