dev-cpp-users

[Dev-C++] using classes in seprate files

[faramarz y. <far...@ho...>]

hi anybody
i have a problem to using seprate c++ classes.
i have write a class "Search.cpp",it has two function in it.
it has not any main function.
now i want to write another file for example test_search
i want to instantiate an object from Search class in it and use it's 
function there.
i wrote:
             Search s;
             s.linear();
but i can not use class Search in it because compiler does not know it.
what should i do?
in dev_c++ or borland c++?
thank u in advanced

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Re: [Dev-C++] using classes in seprate files

[Per W. <pw...@ia...>]

You should create a file
Search.h
with contents:

#ifndef __SEARCH_H
#define __SEARCH_H
class Search {
...
    void linear();
};
#endif

Create a file
Search.cpp
with contents:

#include ...
#include "Search.h"

void Search::linear() {
}
....


Create file
Test.cpp
with contents:

#include ...
#include "Search.h"

int main() {
    Search s;
    s.linear();
    return 0;
}

/Per W

On Wed, 14 Apr 2004, faramarz yari wrote:

> hi anybody
> i have a problem to using seprate c++ classes.
> i have write a class "Search.cpp",it has two function in it.
> it has not any main function.
> now i want to write another file for example test_search
> i want to instantiate an object from Search class in it and use it's
> function there.
> i wrote:
>              Search s;
>              s.linear();
> but i can not use class Search in it because compiler does not know it.
> what should i do?
> in dev_c++ or borland c++?
> thank u in advanced
>
> _________________________________________________________________
> STOP MORE SPAM with the new MSN 8 and get 2 months FREE*
> http://join.msn.com/?page=features/junkmail
>
>
>
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Re: [Dev-C++] using classes in seprate files

[Alvin T. <al...@th...>]

is school back in, already?

#include "Search.h"

-alvin


faramarz yari wrote:
> hi anybody
> i have a problem to using seprate c++ classes.
> i have write a class "Search.cpp",it has two function in it.
> it has not any main function.
> now i want to write another file for example test_search
> i want to instantiate an object from Search class in it and use it's 
> function there.
> i wrote:
>             Search s;
>             s.linear();
> but i can not use class Search in it because compiler does not know it.
> what should i do?
> in dev_c++ or borland c++?
> thank u in advanced
> 
> _________________________________________________________________
> STOP MORE SPAM with the new MSN 8 and get 2 months FREE* 
> http://join.msn.com/?page=features/junkmail
> 
> 
> 
> -------------------------------------------------------
> This SF.Net email is sponsored by: IBM Linux Tutorials
> Free Linux tutorial presented by Daniel Robbins, President and CEO of
> GenToo technologies. Learn everything from fundamentals to system
> administration.http://ads.osdn.com/?ad_id=1470&alloc_id=3638&op=click
> _______________________________________________
> Dev-cpp-users mailing list
> Dev...@li...
> TO UNSUBSCRIBE: http://www23.brinkster.com/noicys/devcpp/ub.htm
> https://lists.sourceforge.net/lists/listinfo/dev-cpp-users

-- 
Alvin Thompson

Navy: 34
Army: 6

Re: [Dev-C++] using classes in seprate files

[<or...@vp...>]

faramarz yari wrote:
> hi anybody
> i have a problem to using seprate c++ classes.
> i have write a class "Search.cpp",it has two function in it.
> it has not any main function.
> now i want to write another file for example test_search
> i want to instantiate an object from Search class in it and use it's=20
> function there.
> i wrote:
>             Search s;
>             s.linear();
> but i can not use class Search in it because compiler does not know it.
> what should i do?

You need to put the definition of the class into a header file, and put=20
only the implementation into the .cpp file. Attached is a very small=20
demo on how to do it.

--
Greetings,
   Bal=E1zs