摘要：
std::ifstream File;std::string filepath = "text.txt";File.open(filepath.c_str(), std::ifstream::out | std::ifstream::trunc );if (!File.is_open() || Fi 阅读全文
摘要：
<fstream> int main() { std::string filename="mylog.txt"; remove(filename.c_str()); return 0; } 阅读全文
摘要：
1/#include <fstream> std::ifstream::pos_type filesize(const char* filename) { std::ifstream in(filename, std::ifstream::ate | std::ifstream::binary); 阅读全文
摘要：
#include <fstream> int main() { std::ifstream src("from.ogv", std::ios::binary); std::ofstream dst("to.ogv", std::ios::binary); dst << src.rdbuf(); } 阅读全文