another problem...

[A1METALHEAD]

i am using visual c++ 6 to create a text adventure game. i have multipal headers and most have corasponding source files. one of the headers that dont is a header that i include in all cpp files. it has all the includs(like iostream and windows.h). the other is a header that just holds functions. i cant seem to include that function header in any file, or it will say that all the functions are already defined! is there anyway to go around this?

thanks,
~metalhead

 

[timmay3141]

Don't put function implimentations in the .h file. You should put ALL the implimentations in cpp files and this problem will go away. When you #include the same header different places and have the implimentation in the header, the compiler thinks you are redefining the function, as it sees the implimentation of a function that is already implimented.

 

[A1METALHEAD]

THANKS! that fixed it, but now whenever i try to declare a linkedlist (that was what i was making) and then try to call any function with it, it will tell me that:
: error C2228: left of '.addNode' must have class/struct/union type
whats that mean?

 

[Salem]

> : error C2228: left of '.addNode' must have class/struct/union type
it probably means you have a pointer, and you should be writing

something->addNode

--

 

[A1METALHEAD]

no its not a pointer...

 

[chipperMDW]

> whats that mean?

It means exactly what it sounds like.

You're saying

something.addNode()

in your program, and [tt]something[/tt] isn't a class, struct, or union, so the dot notation is meaningless.

What was your version of [tt]something[/tt] declared as?

 

[A1METALHEAD]

as a linked list that has addNode(t*,y*) in it.

i know that there is somthing called a map that you can use a key to get an object:
map<x,y>
but i dont know how to use it! could somone tell me how to? and if there is a map that can use two keys to get the same object?

 

[PerFnurt]

>but i dont know how to use it

Example:

#include <map>
#include <string>

// Defining a map where the key is a string 
// the value is an int
typedef std::map<std::string,int> > MyMap;

...
{
  MyMap m;
  m.insert(MyMap::value_type("Foo",42));
  m["Bar"] = 66;
  
  cout << m["Foo") << endl;

  if (m.find("Fnurt") != m.end())
  { } // Found "Fnurt"
  else
  { } // "Fnurt" not found 
}

>and if there is a map that can use two keys to get the same object?

Not unless you let the value part of the map be a pointers to the same instance. It's a bit tricky though.

/Per

_{&quot;It was a work of art, flawless, sublime. A triumph equaled only by its monumental failure.&quot;}