i am using turbo c++ 4.5
how to represent the header file sstream
and
what is meant by
CreateDxf::~CreateDxf()
and how to present it in my turbo c++ 4.5

Could you give us some code to work with? Errors mean very little most of the time without a frame of reference.

Turbo C++ apparently doesn't conform to the C++ standard. So instead of <sstream> use <strstream> and where you would normally use the functions istringstream and ostringstream you have to use istrstream and ostrstream.

The second part of your question is what is called a "destructor". It is a method fired when an object is destroyed and needs to be cleaned up. You can identify this because it looks just like the constructor except includes that tilde character "~".

For instance the example you show is the destructor function for the CreateDxf Object.

To implement it in your program would be just like any other function, but in a context where you have to clean up and free any resources on destruction of the object. This goes back to standard C++ theory. So look up the term "destructor" for more information on how they work.

Hope these answer your questions. Enjoy!

"At DIC we be the answer man, except the one that lurks in the shadows of your closet or under your bed!"

As Martyr2 said, your compiler is too old to support <sstream>. The C++ language changed significantly in 1998/1999, and compilers which pre-date the standard are often missing out on a large number of language features.


The most up-to-date version of Turbo C++ is Turbo C++ Explorer 2006, which fully supports the C++ standard. you can download it for free from Borland's website
http://www.turboexplorer.com/cpp

Where did you get that codes? Is it from here:

http://www.dreamincode.net/forums/showtopic37974.htm

If so, my codes has been compiled and tested by Borland 5.5 compiler which supports the latest ISO.

Use the updated version of your compiler.

As with regards with the constructor and destructor, I think Marty2 has said it already.

last, you need a good book to understand the class in C++.