CodeBlocks问题解决之引入unordered_map报错问题

最新推荐文章于 2023-04-06 23:30:04 发布

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最新推荐文章于 2023-04-06 23:30:04 发布

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本文链接：https://blog.youkuaiyun.com/qq_40977108/article/details/99081370

本文解决了一个常见的C++编程问题，当尝试使用unordered_map时，编译器提示需要支持C++11标准。错误源自c++0x_warning.h文件，解决方案是通过在编译选项中加入-std=c++11或-std=gnu++11来启用C++11支持。

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1、使用unordered_map错误

包含头文件#include <unordered_map>后编译器报错，错误信息为：

This file requires compiler and library support for the \ISO C++ 2011 standard. This support is currently experimental, and must be \enabled with the -std=c++11 or -std=gnu++11 compiler options.

该错误来自文件：c++0x_warning.h中的

/** @file bits/c++0x_warning.h
 *  This is an internal header file, included by other library headers.
 *  Do not attempt to use it directly. @headername{iosfwd}
 */

#ifndef _CXX0X_WARNING_H
#define _CXX0X_WARNING_H 1

#if __cplusplus < 201103L
#error This file requires compiler and library support for the \
ISO C++ 2011 standard. This support is currently experimental, and must be \
enabled with the -std=c++11 or -std=gnu++11 compiler options.
#endif

#endif