#include <fstream>#include <iterator>#include <string>intmain(){std::ifstreamfile("data.txt");// 下面是函数声明:std::stringfoo1(std::istreambuf_iterator<char>(file),std::istreambuf_iterator<char>());// 它声明名为 str 的函数
std::ifstreamstd::basic_ifstream<char> std::wifstreamstd::basic_ifstream<wchar_t> std::ofstreamstd::basic_ofstream<char> std::wofstreamstd::basic_ofstream<wchar_t> std::fstreamstd::basic_fstream<char> std::wfstreamstd::basic_fstream<wchar_t> ...
std::ifstream std::basic_ifstream<char> std::wifstream std::basic_ifstream<wchar_t> Member types Member type Definition char_type CharT traits_type Traits; the program is ill-formed if Traits::char_type is not CharT. int_type Traits::int_type pos_type Traits::pos_type off_type...
basic_ifstream::rdbuf basic_ifstream::native_handle (C++26) File operations basic_ifstream::is_open basic_ifstream::open basic_ifstream::close Non-member functions swap(std::basic_ifstream) (C++11) native_handle_type native_handle() const noexcept; (since C++26) Returns the implementation ...
(&d), sizeof d);// binary outputostrm<<123<<"abc"<<'\n';// text output}// read backstd::ifstreamistrm(filename, std::ios::binary);doubled;istrm.read(reinterpret_cast<char*>(&d), sizeof d);intn;std::strings;istrm>>n>>s;std::cout<<" read back: "<<d<<' '<<n<<...
#include <cstdlib>#include <fstream>#include <iostream>intmain(){std::ifstreamfile("test.txt");if(!file)// operator! is used here{std::cout<<"File opening failed\n";returnEXIT_FAILURE;}// typical C++ I/O loop uses the return value of the I/O function// as the loop controlling co...
ifstream and ofstream #include <fstream> // open an ifstream ifstream inputFile; inputFile.open("InputFile.txt"); // Alternatively: // ifstream inputFile("InputFile.txt"); // open an ofstream ofstream outputFile; outputFile.open("OutputFile.txt"); // Alternatively: // ofstream outputFile...
YAML::Node node; YAML::Node _baseNode = YAML::LoadFile("dynamixel_servos_tilting.yaml"); mean while, I copiedyaml-cpp headers to /usr/local/include. I compiled with g++ --std=c++11 main.cpp -I. -I./libraries/yaml-cpp/include -L./libraries/yaml-cpp -lyaml-cpp -o main ...
<fstream> std::basic_fstream, std::basic_ifstream, std::basic_ofstream class templates and several typedefs <sstream> std::basic_stringstream, std::basic_istringstream, std::basic_ostringstream class templates and several typedefs <strstream> std::strstream, std::istrstream, std::ostrstream(de...
Une implémentation typique de std::basic_ifstream ne contient qu'un seul non-membre de données dérivées: une instance de std::basic_filebuf<CharT, Traits> . Original: A typical implementation of std::basic_ifstream holds only one non-derived data member: an instance of std::basic_file...