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STL Compilation error?

Started by mrmrcoleman Mar 9, 2004 at 2:57 PM 5 replies 400+ views

Original Post

Mar 9, 2004 at 2:57 PM

I have followed one of the STL tutorials from GameTutorials.com but I get an error straight away. To test the header I simply included it, and then declared a list of ints:

#include <list>

list<int> TestList;

But when I compile I get the following error: error C2143: syntax error : missing '';'' before ''<'' error C2501: ''list'' : missing storage-class or type specifiers error C2143: syntax error : missing '';'' before ''<'' Has anybody come across this before? I may well be doing something very silly and not realising it. Thank in advance. Mark Coleman

mrmrcoleman

Author

mrmrcoleman

Mar 9, 2004 at 3:12 PM

Thank you, that fixed that!

But now I have another problem ;(

In my program I have a Base class say X, and two derived classes

class Y : public X

and

class Z : public X

The idea was that I could have a list of objects which could be Y's or Z's but which could be held in a list of X's. Are Y's and Z's not also X's?

i.e. Couldnt I do the following?


list <X> BigList;
Y* NewObject = new NewObject(...);
BigList.push_front(NewObject);

The compiler is now moaning about the lack of a copy constructor in the base class even though it is present. Have a made a large mistake here?

[edited by - mrmrcoleman on March 9, 2004 4:16:39 PM]

Hazem_vb

Mar 9, 2004 at 3:46 PM


list <X*> BigList;
Y* NewObject = new NewObject(...);
BigList.push_front(NewObject);

This will solve your problem ...

[edited by - Hazem_vb on March 9, 2004 4:47:50 PM]

mrmrcoleman

Author

mrmrcoleman

Mar 9, 2004 at 4:04 PM

Thank you very much for your help..

You guys are fast!

Thanks again.

Mark Coleman

risingdragon3

Mar 9, 2004 at 5:14 PM

Of course since you are using pointers, you have to delete them before removing them from the list....or use boost::shared_ptr or similar

http://www.bost.org

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