我们经常使用ofstream或者fstream可写文件,使用ifstream可以写文件,但需要设置文件的打开状态为ios::out。
0 Writing binary data to private ofstream produces unexpected result 0 When writing into a binary file, ofstream::write writes more bytes than it should 1 using ofstream writes binary without the ios::binary flag C++ 0 issue while creating binary files 0 Why is ofstream::write adding...
定义文件流写入的时候 std::ofstream fs(File,ios::binary)这样定义就不会每次遇到0A的时候多塞入一个0D的值进去了 std::ifstream 和 std::ofstream 定义写入属性代表的意义 ios::app: 以追加的方式打开文件 ios::ate: 文件打开后定位到文件尾,ios:app就包含有此属性 ios::binary: 以二进制方式打开文件,缺...
std::ofstream ofs; ofs.open(name); ASSERT(ofs.good()); ofs.write(buffer, size); ASSERT(ofs.good()); ofs.close(); .xml,.lua,等文本都是对的,唯独.jpg这些图片些不对! open改为ofs.open(name, std::ios::out | std::ios::binary); 就对了! 原因应该是ofstream打开文件时默认是文本格式吧...
open改为ofs.open(name, std::ios::out | std::ios::binary);就对了!原因应该是ofstream打开⽂件时默认是⽂本格式吧。。。void open(const char *_Filename,ios_base::openmode _Mode = ios_base::out,int _Prot = (int)ios_base::_Openprot );void open(const char *_Filename,ios_base::...
std::ofstream send_audio_data_ = std::ofstream("send_audio", std::ios::out| std::ios::binary); // 音频数据采集的过程,此处省略 // 48000hz, 16bit, 2channels ... // 停止发送数据 Stop(); } 本地会生成一个无格式的 send_audio 文件,如何查看音频是否符合预期呢 我们要...
std::ofstream是C++标准库中用于文件输出的类,用于将数据写入文件。然而,它无法直接将std::string类型的字符串写入文件。 要将std::string写入文件,可以使用std::ofstream的成员函数write()或者使用输出运算符<<。下面是两种方法的示例: 使用write()函数:#include <fstream> #include <string> int main() {...
std::ofstream 如果已有文件,清空,没有创建 std::ofstream fHandle;fHandle.open("D:/test.txt",std::ios::in|std::ios::binary|std::ios::trunc);charszBuffer[]={"Welcome to https://blog.51cto.com/fengyuzaitu"};fHandle.write(szBuffer,sizeof(szBuffer));fHandle.close(); ...
I am trying to write binary file using std::ofstream::write method. I found out, that some characters are not written as they are, for example: std::ofstream in("testout"); int i =10; in.write((const char *)(&i), sizeof(i)); in.close(); return 0; will write the followin...
std::ifstream fileInputHandle("f:/192.168.12.3_1_DaHua_004316fc47073c-0c71-4087-8070-7793181e8fb6.sy", std::ios::binary); std::ofstream fileOutputHandle("f:/output.h264", std::ios::binary | std::ios::trunc); //获取文件长度 fileInputHandle.seekg(0, std::ios::end); int nFi...