runtime_error未定义！怎么解决？

[哈利_蜘蛛侠]

按照《C++ Primer》上面的例子，在VS 2008里进行编译，可是编译的时候提示错误，就是
runtime_error identifier not found
这个是什么情况？

//
#include <iostream>
#include <stdexcept>
using std::cin;
using std::cout;
using std::endl;
void keep_window_open();

int main()
{
	int dividend=1, divisor=1;
	cout<<"\nInput the dividend:\t";
	cin>>dividend;

	cout<<"\nInput the divisor:\t";
	cin>>divisor;
	if(divisor <=0)
		throw runtime_error("\nNo! The divisor must be a positive number!\n");

	keep_window_open();
}

void keep_window_open()
{
	cout << "\nPress any key to exit:";
	getchar();
}

难道是编译器的问题？不会这么坑吧？

[哈利_蜘蛛侠]

引用 1 楼 stereoMatching 的回复:

#include<cstdio>

另外，你可以用

std::cin.get();

取代

getchar();

不行哦，报错还是一样的。

[FancyMouse]

std::runtime_error

[stereoMatching]

#include<cstdio>

另外，你可以用

std::cin.get();

取代

getchar();

[SmallCoder1992]

你这个是有问题的，你在抛出异常之后不进行处理吗？？你需要进行try - catch，不然程序会出现无法对throw进行处理的

[stereoMatching]

引用 3 楼 u011873969 的回复:

[quote=引用 1 楼 stereoMatching 的回复:]

#include<cstdio>

另外，你可以用

std::cin.get();

取代

getchar();

不行哦，报错还是一样的。[/quote] 没注意到你有throw 加个try{}catch{}吧

[哈利_蜘蛛侠]

哈哈哈，终于搞定啦！确实如4楼所言哦！下面是我编的一个无聊的小程序：

//
#include <iostream>

using std::cin;
using std::cout;
using std::endl;
using std::runtime_error;

void keep_window_open();

int main()
{
	int dividend=1, divisor=1;
	int result=1;
	char decide1 = 'y', decide2 = 'y';
	
	while(decide1 == 'y')
	{
		cout<<"\nInput the dividend:\t";
		cin>>dividend;
		try
		{
			if(dividend<0)
			{
				throw runtime_error("For convenience, please make sure dividend is non-negative!\n");

			}
			decide1 = 'n';
		
			while(decide2 == 'y')
			{
				cout<<"\nInput the divisor:\t";
				cin>>divisor;
				try
				{
					if(divisor<=0)
						throw runtime_error("For convenience, divisor must be positive!\n");
					decide2 = 'n';
					result = dividend/divisor;
				}catch(runtime_error err)
				{
					cout << err.what()
						 << "\n Try Once More? Enter y or n "<<endl;
					cin >>decide2;
				}
			}
		}catch(runtime_error err)
			{
				cout << err.what()
					 << "\n Try Again? Enter y or n" << endl;
				cin >>decide1;
			}
	}

	cout <<"\nSo the quotient of "<<dividend<<" divided by "<<divisor<<" is:\t"<<result<<endl;

	keep_window_open();
}

void keep_window_open()
{
	cout << "\nPress any key to exit:";
	getchar();
}

[booirror]

用std::runtime_error 替换runtime_error