如何使用try catch块避免这种异常? [英] How to avoid this exception using try catch block?

问题描述

CString Meal::GetKitchenNote()
{
	try{
		return m_KitchenNote;
	 }
	catch(CString m_KitchenNote )
	{
		return CString("");
	}

我正在使用上面的代码，程序崩溃了，如何避免这种异常.
正在收到此异常:CXX0017:错误:符号"m_KitchenNote?"找不到

I am using the above code, the program crashes, how to avoid this exception..

Am getting this exception: CXX0017: Error: symbol "m_KitchenNote?" not found

推荐答案

这是编译时错误.确保您正确拼写了变量名，并且该变量名存在于Meal的类定义中.

另外，return m_KitchenNote;不会抛出任何异常，因此这里不需要尝试/捕获.

This is a compile time error. Make sure you spelt the variable name correctly and that it exists in the class definition for Meal.

Additionally, return m_KitchenNote; will not throw any exceptions, so there is no need for a try/catch here.

您应该使用:

You should be using :

...
catch(Exception *e)
{
}
...

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