(C++) 错误：'invalid_argument'未在此范围内声明

(C++) error: 'invalid_argument' was not declared in this scope

本文关键字：范围内 声明 argument C++ invalid 错误      更新时间：2023-10-16

我正在使用Eclipse C/C++和MinGW编译器。我已经在项目属性的c/c++Build下的Miscellaneous GCC c Compiler Settings中添加了-std=c++11标志。我知道这可能是一件简单的事情，但我无法解决这个错误。

Date.h

#include <iostream>
using namespace std;
class Date {
public:
    Date(int m = 1, int d = 1, int y = 1900);
    void setDate(int, int, int);
private:
    int month;
    int day;
    int year;
    static const int days[];
};

Date.cpp

#include <iostream>
#include <string>
#include "Date.h"
using namespace std;
const int Date::days[] = {
    0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31
};
Date::Date(int month, int day, int year){
    setDate(month, day, year);
}
void Date::setDate(int month, int day, int year){
    if (month >= 1 && month <= 12){
        this->month = month;
    } else {
        // error
        invalid_argument("month must be within the range [0, 12]");
    }
    ...
}

编译器消息：

..Date.cpp: In member function 'void Date::setDate(int, int, int)':
..Date.cpp:25:60: error: 'invalid_argument' was not declared in this scope
   invalid_argument("month must be within the range [0, 12]");

std::invalid_argument在标头<stdexcept>中定义。包括它。

您可能还意味着throw对象，而不仅仅是构造它：

throw invalid_argument("month must be within the range [1, 12]");
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