std::ifstream::read does not read all 512 bytes, and sets eof and fail bits Please take a look at a code snippet std::ifstreaminput_file(input_file_path);char* data =new(std::nothrow)char[block_size];if(!data) { std::cout <<"Failed to allocate a buffer"<<'\n'...
file.exceptions(std::ifstream::badbit | std::ifstream::failbit | std::ifstream::eofbit); std::cout << file.good() << std::endl;try{ file.read(vec.data(),100); }catch(std::ios_base::failure f) { std::cout << f.what() <<" Characters extracted: "<< file.gcount() << std:...
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...
std::ifstream unable to differentiate between eof & read error Under Consideration04 1Votes JIJuraj Ivančić -Reported Apr 20, 2023 4:34 PM [severity:It bothers me. A fix would be nice] When reading fromstd::ifstreamand the input ends, it doesn’t seem possible to di...
Today meets a bug, when read more than one files using only one std::ifstream object. possible code as following: std::ifstream infile infile.open(a)if(infile.bad()) { std::cerr<<"read failed"<<std::endl; } std::stringline ="";while(std::getline(infile, line), infile.good())...
std::ifstream file("binary.dat", std::ios::binary); int value; if (file.is_open()) { file.read(reinterpret_cast(&value), sizeof(value)); file.close(); } std::cout << "The value is: " << value; In this example, the function reads binary data from a file called "binary....
std::ifstream::read or std::ofstream::write with a zero parameter?Ask Question Asked 11 years, 11 months ago Modified 11 years, 11 months ago Viewed 1k times 6 Is it perfectly ok (= well defined behaviour according to the standard) to call : mystream.read(buffer, 0); or...