#include <sys/stat.h> // Function: fileExists /** * Check if a file exists * * @param[in] filename - the name of the file to check * * @return true if the file exists, else false */ bool fileExists(const std::string& filename) { struct stat buf; if (stat(filename.c_str...
make_minimum_required(VERSION 3.13) project(TheFsProject) set(CMAKE_CXX_STANDARD_REQUIRED ON) set(CMAKE_REQUIRED_FLAGS -std=c++17) include(CheckCXXSymbolExists) CHECK_CXX_SYMBOL_EXISTS(std::filesystem::path::preferred_separator cxx17fs) if(cxx17fs) add_executable(TheFsProject main.cpp) set...
1)std::filesystem::exists(status())。 2)std::filesystem::exists(status(ec))。 注意,status()将跟随符号链接到其目标。 参数 返回值 若被指代文件系统对象存在则为true。 异常 若内存分配失败,则任何不标记为noexcept的重载可能抛出std::bad_alloc。
百度试题 题目判断std::filesystem::path 的对象 p 中保存的路径是否存在的语句是:? p.empty();exists(p);p.exists();empty(p); 相关知识点: 试题来源: 解析 exists(p); 反馈 收藏
boolis_other(conststd::filesystem::path&p); (2)(since C++17) boolis_other(conststd::filesystem::path&p,std::error_code&ec)noexcept; (3)(since C++17) Checks if the given file status or path corresponds to a file of typeothertype. That is, the file exists, but is neither regular...
原因:切换到 directory_entry::exists 运行此代码 #include <iostream> #include <fstream> #include <cstdint> #include <filesystem> namespace fs = std::filesystem; void demo_exists(const fs::path& p, fs::file_status s = fs::file_status{}) { std::cout << p; if(fs::status_known(s)...
namespace fs = std::experimental::filesystem;fs::path pathToShow("C:\\Windows\\system.ini");cout << "exists() = " << fs::exists(pathToShow) << "\n"<< "root_name() = " << pathToShow.root_name() << "\n"<< "root_path() = " << pathToShow.root_path() << "\n"<...
Filesystem library Defined in header<experimental/filesystem> boolexists(file_status s) (1)(filesystem TS) boolexists(constpath&p); boolexists(constpath&p, error_code&ec) (2)(filesystem TS) Checks if the given file status or path corresponds to an existing file or directory. ...
#include <iostream> #include <fstream> #include <cstdint> #include <filesystem> namespace fs = std::filesystem; void demo_exists(const fs::path& p, fs::file_status s = fs::file_status{}) { std::cout << p; if(fs::status_known(s) ? fs::exists(s) : fs::exists(p)) std:...
#include <filesystem>namespace fs = std::filesystem;int main() {// 创建一个新目录fs::create_directory("example_dir");// 检查文件是否存在bool file_exists = fs::exists("example_file.txt");// 获取文件大小auto file_size = fs::file_size("example_file.txt");// 更多的文件系统操作......