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Right now I'm working on a project to try to port all of the code used in Johnathan S. Harbour's DarkBASIC Pro book, and make it DarkGDK compatible code.

I'm having a little trouble trying to concat some char* variables.

Here is the code:


I'm getting this error upon building:

1>LINK : fatal error LNK1561: entry point must be defined

You're declaring buffer as a pointer but it doesn't do any good until you have it pointing to something. In this case you want to do

char *buffer = new char [256];

to declare enough space to put any amount of reasonable text in it.

Well, Tried it, still get the same compiling error.

That error message has nothing to do with strings. It tells you that the compiler does not recognize the "void DarkGDK()" function as a valid program entry point. Did you create the project using the Dark GDK game wizard or created an empty project in Visual Studio? Use the wizard to make a new project and try again.

However, Lilith was correct in saying that your buffer handling can be improved too, after you manage to get the code to compile. You can either use her suggestion and "new" the buffer (but then it's advisable to delete it somewhere too, after you're done using it) or declare it as a static char array: char buffer[256]

It is also advisable to delete the returned string if you are using a Dark GDK function which returns char pointer (like the dbSpaces function), to avoid memory leak.