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::openmode_Mode); void open( const wchar_t *_Filename, ios_base::openm...
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::openmode_Mode); void open( const wchar_t *_Filename, ios_base::openm...
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::...
<cpp |io |basic ofstream voidopen(constchar*filename, std::ios_base::openmodemode =std::ios_base::out); (1) voidopen(conststd::filesystem::path::value_type*filename, std::ios_base::openmodemode =std::ios_base::out); ...
OpenMode mode) {if(mode == AppendMIPLevel) { error ("%s does not support MIP levels", format_name());returnfalse; } close ();// Close any already-opened filem_spec = userspec;// Stash the spec// Check for things this format doesn't supportif(m_spec.width <1|| m_spec.height...
basic_ofstream(); (1) explicitbasic_ofstream(constchar*filename, std::ios_base::openmodemode =std::ios_base::out); (2) explicitbasic_ofstream(conststd::filesystem::path::value_type*filename, std::ios_base::openmodemode =std::ios_base::out); ...
// C++ program to implementclose() function#include<fstream>#include<iostream>usingnamespacestd;// Driver Codeintmain(){chardata[100];// Open a file in write// mode.ofstream outfile; outfile.open("gfg.dat");cout<<"Writing to the file"<<endl;cout<<"Enter your name:";// This function...
> class basic_ofstream : publicstd::basic_ostream<CharT, Traits> 类模板basic_ofstream实现文件上基于流的高层输出操作。它将std::basic_ostream的高层接口赋予基于文件的流缓冲(std::basic_filebuf)。 std::basic_ofstream典型实现只保有一个非导出成员:std::basic_filebuf<CharT, Traits> 的实例。
std::ios_base::openmode which = std::ios_base::in | std::ios_base::out ); 若可能,则重寻位文件指针到距文件起始、结尾或当前位置准确 off 个字符的位置(取决于 dir 的值)。 若关联文件未打开( is_open()==false ),则立即失败。 若多字节字符编码依赖状态( codecvt::encoding() 返回-1 )或为...
文件对象 = open('文件名','使用方式') rt：读取一个txt文件 wt: 只写打开一个txt文件，（如果没...