fread fwrite

例子1：读char* 保存char*
const char filename[] = "D:\\td_work\\tdvad\\pcm\\new_mp3.mp3"; // 读取的文件
FILE* fp = nullptr;
fopen_s(&fp,filename, "rb");
if (fp != nullptr)
{fseek(fp, 0, SEEK_END);long fileSize = ftell(fp);fseek(fp, 0, SEEK_SET);{char* buff = new char[fileSize];memset(buff, 0, fileSize);int nRead = fread(buff, sizeof(char), fileSize, fp);const char dst[] = "D:\\td_work\\tdvad\\pcm\\new_mp3_1111111.mp3"; // 保存的文件FILE* fpdst = nullptr;fopen_s(&fpdst, dst, "wb");fwrite(buff, sizeof(char), nRead, fpdst);fclose(fp);fclose(fpdst);int ii = 3;}
}

例子2： 读char* 用short* 保存std::wstring sFileName = L"D:\\td_work\\tdvad\\pcm\\new_mp3.mp3";
FILE* fp = nullptr;
_wfopen_s(&fp,sFileName.c_str(), L"rb");if (fp != nullptr)
{fseek(fp, 0, SEEK_EN