ifstream ifs(srcFile, ifstream::binary);if(ifs.is_open()) { ifs.seekg(0, ifs.end);longfilesize =ifs.tellg(); ifs.seekg (0);char* fileBuffer =newchar[filesize];//分配内存缓冲区ifs.read(fileBuffer, filesize);//读取文件内容到缓冲区ifs.close();//do sth. with fileBufferdelete[]fil...
我正在尝试打开一个文件并使用ifstream读取它 代码语言:javascript 复制 vector<string> load_f(string file) { vector<string> text; ifstream ifs(file); string buffer, str_line; int brackets = 0; str_line = ""; while ( getline(ifs, buffer) ) { buffer = Trim( buffer ); size_t s = buffe...
main.cpp: In function 'bool ReadTimeInterval(std::string&)': main.cpp:134: error: variable 'std::ifstream ifs' has initializer but incomplete type main.cpp:139: warning: deprecated conversion from string constant to 'char*' main.cpp:139: warning: cannot pass objects of non-POD type 'con...
std::ifstream ifs(path, std::ifstream::ate | std::ifstream::binary); unsigned int size = ifs.tellg(); ifs.close(); Run Code Online (Sandbox Code Playgroud) 大多数时候,在 C++ 中,在哪里/何时调用相关ifs.good()?就我而言,创建流后还是调用后更好tellg()?
ifstream ifs(srcFile, ifstream::binary); if(ifs.is_open()) { ifs.seekg(0, ifs.end); long filesize = ifs.tellg(); ifs.seekg (0); char* fileBuffer = new char[filesize]; //分配内存缓冲区 ifs.read(fileBuffer, filesize); //读取文件内容到缓冲区 ...
std::ifstream ifs("d:\\test.jpg", std::ios::in| std::ios::binary); std::vector<char> data((std::istreambuf_iterator<char>(ifs)), std::istreambuf_iterator<char>()); 注意:这里使用的是stream buffer的迭代器,而不是stream迭代器。因为这里的以binary把数据保存到buffer,若用stream,则以文...
std::ifstream ifs("d:\\test.jpg", std::ios::in| std::ios::binary); std::vector<char> data((std::istreambuf_iterator<char>(ifs)), std::istreambuf_iterator<char>()); 注意:这里使用的是stream buffer的迭代器,而不是stream迭代器。因为这里的以binary把数据保存到buffer,若用stream,则以文...
using std::ifstream; string fn = "d:\testfile.txt"; ifstream ifs(fn.c_str()); string line; std::getline(ifs,line); while(!line.empty()){ //output current line just read cout << "pos # " << ifs.tellg() << " after reading :" << line << endl; ...
gcc正在抱怨，因为ifs和iss是两种不同的类型。static_casting类型到std：：istream&将解决您的问题。
std::ifstreamifs("myfile.bin",std::ios::binary);auto sp=std::make_shared<std::vector<char>...