// 打开文件,获得文件流 std::ifstream inFile(fileName.c_str(), std::ios::in | std::ios::binary); std::ostringstream oss; oss << inFile.rdbuf(); std::string buffer = oss.str(); inFile.close();
another file stream to use as source 例 二次 代码语言:javascript 复制 #include<fstream>#include<utility>#include<string>intmain(){std::ifstream f0;std::ifstreamf1("test.bin",std::ios::binary);std::string name="example.txt";std::ifstreamf2(name);std::ifstreamf3(std::move(f1));} ...
C++ 通过以下几个类支持文件的输入输出： ofstream: 写操作（输出）的文件类 (由ostream引申而来) ifst...
filebuf File stream buffer (class )链接 成员函数 Public member functions 1, (constructor) 第一种不绑定文件,后续用open() 绑定。 第二种绑定文件 filename ,读取模式默认参数为 ios_base::in可以省略。 1default(1) ifstream();2initialization (2)3explicitifstream (constchar* filename, ios_base::op...
std::string filename("filei o"); std::ifstream file(filename.c _str(), std::ios::in|st d::ios::binary std::ios::ate); std::vector<cha r>vbuf(file.tel lg()); file.seekg(0, std::ios::beg); file.read(&vbuf[0], vbuf.size()); ...
#include <iostream>usingnamespacestd;enumBOOL { FALSE , TRUE };intmain(intargc,char**argv)//returns 1 on error{if(argc != 2) { cout <<"Usage: argv[0] <infile>\n";return(1); }//open the input streamifstream fin (argv[1], ios::binary);if(!fin) { cout <<"Unable to open...
explicit basic_ifstream( const char* filename, std::ios_base::openmode mode = ios_base::in ); (2) explicit basic_ifstream( const std::filesystem::path::value_type* filename, std::ios_base::openmode mode = ios_base::in ); (3) (C++17 起) explicit basic_ifstream( const std::...
加头文件#include <fstream> include <string> 就行
类模板basic_ifstream实现文件流上的高层输入操作。它将std::basic_istream的高层接口赋予基于文件的流缓冲(std::basic_filebuf)。 std::basic_ifstream的典型实现只保有一个非派生数据成员:std::basic_filebuf<CharT, Traits>的一个实例。 继承图 提供了几个针对常用字符类型的 typedef: ...
ifstream *inFile =newifstream(szFile); std::wstring szwFileStr((std::istreambuf_iterator<wchar_t>(*inFile)),std::istreambuf_iterator<wchar_t>()); It fails,on the bold part Need the string, containing the input from the file, to be a std::wstring (needs to handle somce chars, no...