Inheritance issue [modified]

[big_denny_200]

hello :) I've found my silly mistake please help me find error in my code :

// *************
class Base
{
public :

	virtual ~Base() {};

	// Retrieve value of X
	virtual void getX() const
	{
		cout<// should be &pError here
{
	pError->getX(); **// and .getX() here** 
}

return 0;

}

sorry for stupid question I am pretty tired, need a good sleep :) -- modified at 9:42 Monday 29th May, 2006

[toxcct]

big_denny_200 wrote:

virtual void getX() const { cout<;

don't close your functions definitions with semicolons (';'). at last, just curious... don't you understand what the compiler says when complaining ?! ;P i have no compiler to test here, so, sorry.

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TOXCCT >>> GEII power

[VisualCalc 3.0  updated ][Flags Beginner's Guide  new! ] -- modified at 9:45 Monday 29th May, 2006

[big_denny_200]

no :( why not use semicolons ? thanks -- modified at 9:34 Monday 29th May, 2006

[toxcct]

big_denny_200 wrote:

why not use semicolons ?

and you didn't answer my questions more. * What are the compiler errors ?

---

TOXCCT >>> GEII power

[VisualCalc 3.0  updated ][Flags Beginner's Guide  new! ] -- modified at 9:45 Monday 29th May, 2006

[Sarath C]

it is not the problem with a ";" problem is with ur try catch block;

big_denny_200 wrote:

catch (Base *pError)

u r catching a pointer to the throwing object but inside the try block u r doing

big_denny_200 wrote:

throw Derived1(); // when I add this line I get assert

so inside the throw block do as follows Derived1 d; // when I add this line I get assert throw &d; or throw &Derived1(); // when I add this line I get assert u can also resolve if u change the catch block to pass by value instead pass by reference SaRath
"D on't blindly follow rules you read somewhere without verifying that it makes sense for your situation!"

[Cedric Moonen]

toxcct wrote:

because the C++ doesn't want them here

In fact, this won't change anything. You can let them there. They will simply be ignored.

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Cédric Moonen Software developer
Charting control

[Sarath C]

a function ending with ";" is simply compiling with visual studio .net and visual studio 6 C++ compiler. SaRath
"D on't blindly follow rules you read somewhere without verifying that it makes sense for your situation!"

[Sarath C]

Cedric have u seen my post? I think that is the reason for his assertion? SaRath
"D on't blindly follow rules you read somewhere without verifying that it makes sense for your situation!"

[Stephen Hewitt]

SaRath C wrote:

Derived1 d; // when I add this line I get assert throw &d;

Never do this as it’s seriously flawed. The object d is on the stack but the stack is unwound when an exception is caught. The upshot is that when you catch an exception with such code the exception handler gets a pointer to an object which no longer exists. It's the same situation as returning a reference or pointer to a local variable from a function. Steve

[Stephen Hewitt]

You're throwing a Derived1 but catching a Base*. If you want to catch a Base* you need code like this: try {     throw new Derived1(); } catch (Base *pError) {     pError->getX();     delete pError; } A better was is not to throw a pointer. Use code like this: try {     throw Derived1(); } catch (const Base &e) {     e.getX(); } Steve