C++ å‚考手册
- C++11
- C++14
- C++17
- C++20
- C++ 编译器支æŒæƒ…况表
- 独立与宿主实现
- C++ è¯è¨€
- C++ 关键è¯
- 预处ç†å™¨
- C++ æ ‡å‡†åº“å¤´æ–‡ä»¶
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <ctime>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <cstring>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <set>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <cctype>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <cwctype>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <utility>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <queue>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <complex>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <iterator>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <algorithm>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <valarray>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <numeric>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <cmath>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <iosfwd>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <ios>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <iomanip>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <streambuf>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <istream>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <ostream>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <iostream>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <sstream>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <clocale>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <vector>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <deque>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <list>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <map>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <cwchar>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <locale>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <codecvt>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <bitset>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <functional>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <stdexcept>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <csignal>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <csetjmp>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <stack>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <cassert>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <cerrno>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <memory>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <typeindex>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <type_traits>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <chrono>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <initializer_list>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <tuple>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <scoped_allocator>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <cstdint>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <cinttypes>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <system_error>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <cuchar>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <array>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <forward_list>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <unordered_set>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <unordered_map>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <random>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <ratio>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <cfenv>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <regex>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <atomic>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <thread>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <mutex>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <future>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <condition_variable>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <any>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <optional>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <variant>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <memory_resource>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <string_view>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <charconv>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <execution>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <filesystem>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <concepts>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <coroutine>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <compare>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <version>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <source_location>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <format>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <span>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <ranges>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <bit>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <numbers>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <syncstream>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <stop_token>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <semaphore>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <latch>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <barrier>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <string>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <cstddef>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <limits>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <cfloat>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <climits>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <cstdlib>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <new>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <typeinfo>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <exception>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <cstdarg>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <ciso646>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <cstdalign>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <cstdbool>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <fstream>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <cstdio>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <strstream>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <shared_mutex>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <ccomplex>
- æ ‡å‡†åº“å¤´æ–‡ä»¶ <ctgmath>
- 注释
- å…·åè¦æ±‚
- 功能特性测试 (C++20)
- 工具库
- 类型支æŒï¼ˆåŸºæœ¬ç±»åž‹ã€RTTIã€ç±»åž‹ç‰¹æ€§ï¼‰
- 概念库 (C++20)
- 错误处ç†
- 动æ€å†…å˜ç®¡ç†
- 日期和时间工具
- å—符串库
- 容器库
- è¿ä»£å™¨åº“
- 范围库 (C++20)
- 算法库
- 数值库
- 输入/输出库
- 文件系统库
- 本地化库
- æ£åˆ™è¡¨è¾¾å¼åº“
- 原åæ“作库
- 线程支æŒåº“
- 实验性 C++ 特性
- 有用的资æº
- 索引
- std 符å·ç´¢å¼•
- åç¨‹æ”¯æŒ (C++20)
- C++ 关键è¯
ä½ç½®ï¼šé¦–页 > C++ å‚考手册 >C++ æ ‡å‡†åº“å¤´æ–‡ä»¶ > æ ‡å‡†åº“å¤´æ–‡ä»¶ <system_error>
æ ‡å‡†åº“å¤´æ–‡ä»¶ <system_error>
æ¤å¤´æ–‡ä»¶æ˜¯é”™è¯¯å¤„ç†åº“的一部分。
ç±»
| (C++11) |
错误类别的基类 (类) |
| (C++11) |
ä¿æœ‰å¯ç§»æ¤çš„错误ç (ç±») |
| (C++11) |
åˆ—å‡ºæ‰€æœ‰æ ‡å‡† <cerrno> å®å¸¸é‡çš„ std::error_condition 枚举 (ç±») |
| (C++11) |
ä¿æœ‰ä¾èµ–于平å°çš„错误ç (ç±») |
| (C++11) |
用于报告拥有 error_code 的错误æ¡ä»¶çš„异常类 (ç±») |
| (C++11) |
鉴别类是å¦å¯ä½œä¸º error_code 枚举 (类模æ¿) |
| (C++11) |
鉴别枚举是å¦å¯ä½œä¸º std::error_condition (类模æ¿) |
| (C++11) |
std::error_code çš„æ•£åˆ—æ”¯æŒ (类模æ¿ç‰¹åŒ–) |
函数
| (C++11) |
鉴别通用错误类别 (函数) |
| (C++11) |
鉴别æ“作系统错误类别 (函数) |
| (C++20 ä¸ç§»é™¤)(C++20 ä¸ç§»é™¤)(C++20) |
比较两个 error_code (函数) |
| 输出值和类别ååˆ°è¾“å‡ºæµ (函数) | |
| (C++11) |
æž„é€ std::errc 错误ç (函数) |
| (C++20 ä¸ç§»é™¤)(C++20 ä¸ç§»é™¤)(C++20) |
比较 error_condition 和 error_code (函数) |
| æž„é€ std::errc 错误æ¡ä»¶ (函数) |
概è¦
namespace std { class error_category; class error_code; class error_condition; class system_error;  template <class T> struct is_error_code_enum : public false_type {};  template <class T> struct is_error_condition_enum : public false_type {};  enum class errc {  address_family_not_supported, // EAFNOSUPPORT address_in_use, // EADDRINUSE address_not_available, // EADDRNOTAVAIL already_connected, // EISCONN argument_list_too_long, // E2BIG argument_out_of_domain, // EDOM bad_address, // EFAULT bad_file_descriptor, // EBADF bad_message, // EBADMSG broken_pipe, // EPIPE connection_aborted, // ECONNABORTED connection_already_in_progress, // EALREADY connection_refused, // ECONNREFUSED connection_reset, // ECONNRESET cross_device_link, // EXDEV destination_address_required, // EDESTADDRREQ device_or_resource_busy, // EBUSY directory_not_empty, // ENOTEMPTY executable_format_error, // ENOEXEC file_exists, // EEXIST file_too_large, // EFBIG filename_too_long, // ENAMETOOLONG function_not_supported, // ENOSYS host_unreachable, // EHOSTUNREACH identifier_removed, // EIDRM illegal_byte_sequence, // EILSEQ inappropriate_io_control_operation, // ENOTTY interrupted, // EINTR invalid_argument, // EINVAL invalid_seek, // ESPIPE io_error, // EIO is_a_directory, // EISDIR message_size, // EMSGSIZE network_down, // ENETDOWN network_reset, // ENETRESET network_unreachable, // ENETUNREACH no_buffer_space, // ENOBUFS no_child_process, // ECHILD no_link, // ENOLINK no_lock_available, // ENOLCK no_message_available, // ENODATA no_message, // ENOMSG no_protocol_option, // ENOPROTOOPT no_space_on_device, // ENOSPC no_stream_resources, // ENOSR no_such_device_or_address, // ENXIO no_such_device, // ENODEV no_such_file_or_directory, // ENOENT no_such_process, // ESRCH not_a_directory, // ENOTDIR not_a_socket, // ENOTSOCK not_a_stream, // ENOSTR not_connected, // ENOTCONN not_enough_memory, // ENOMEM not_supported, // ENOTSUP operation_canceled, // ECANCELED operation_in_progress, // EINPROGRESS operation_not_permitted, // EPERM operation_not_supported, // EOPNOTSUPP operation_would_block, // EWOULDBLOCK owner_dead, // EOWNERDEAD permission_denied, // EACCES protocol_error, // EPROTO protocol_not_supported, // EPROTONOSUPPORT read_only_file_system, // EROFS resource_deadlock_would_occur, // EDEADLK resource_unavailable_try_again, // EAGAIN result_out_of_range, // ERANGE state_not_recoverable, // ENOTRECOVERABLE stream_timeout, // ETIME text_file_busy, // ETXTBSY timed_out, // ETIMEDOUT too_many_files_open_in_system, // ENFILE too_many_files_open, // EMFILE too_many_links, // EMLINK too_many_symbolic_link_levels, // ELOOP value_too_large, // EOVERFLOW wrong_protocol_type, // EPROTOTYPE };  template <> struct is_error_condition_enum<errc> : true_type { }  const error_category& generic_category() noexcept; const error_category& system_category() noexcept;  error_code make_error_code(errc e) noexcept; error_condition make_error_condition(errc e) noexcept;  // 比较è¿ç®—符 bool operator==(const error_code& lhs, const error_code& rhs) noexcept; bool operator==(const error_code& lhs, const error_condition& rhs) noexcept; bool operator==(const error_condition& lhs, const error_code& rhs) noexcept; bool operator==(const error_condition& lhs, const error_condition& rhs) noexcept; bool operator!=(const error_code& lhs, const error_code& rhs) noexcept; bool operator!=(const error_code& lhs, const error_condition& rhs) noexcept; bool operator!=(const error_condition& lhs, const error_code& rhs) noexcept; bool operator!=(const error_condition& lhs, const error_condition& rhs) noexcept;  // æ•£åˆ—æ”¯æŒ template <class T> struct hash; template <> struct hash<error_code>; } // namespace std