Hello everyone! :-D
OK, I got a simple question, how do I make a function return an array? This gives me a compile error:

CHAR_INFO[] DrawMap()

How do I fix it? Thanks! ;)

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Ruffle Mayo says ROFLMAO! :D

You cannot return an array that way, you need to pass it to the function by reference.

Chi

They mostly come at night...mostly.

Hmm... I think I'll just use a global variable... Thanks! ;-)

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Ruffle Mayo says ROFLMAO! :D

God NO!!!!
You should be using OOP and some elegance...not global variables.

Passing it by reference is dead simple.

just define your function as:
void DrawMap(char CHAR_INFO[])

Chi

They mostly come at night...mostly.

Here is an example:

#include "stdafx.h"
using namespace std;
void DrawMap(char CHAR_INFO[]);
int _tmain(int argc, _TCHAR* argv[])
{
char char_info[3] = {'1','2','3'};
DrawMap(char_info);
cout << char_info[0] << endl;
int a;
cin >> a;
return 0;
}

void DrawMap(char CHAR_INFO[])
{
CHAR_INFO[0] = 'A';
}

Chi

They mostly come at night...mostly.

Sulfurik,

Are you creating the array inside the function? If so, you'll either need to use double indirection (a good old double pointer in C (**) ) or create the array inside the function and then return a pointer (pointers and arrays are pretty much the same thing in the compiler's eyes). Here's an example of both (only if you are creating the array _inside_ the function).

//double pointer
void DrawMap(char **array)
{
*array=(char *)malloc(100);

if(!(*array)){
return; //bail
}

(*array)[0]='A';
}

//return pointer
char *DrawMap(void)
{
char *array;

array=(char *)malloc(100);

if(!array){
return; //bail
}

array[0]='A';

return(array);
}

Otherwise, Chi is right. Sure it's kind of old fashioned (I really need to polish up on my techniques and get more C++ oriented, but I don't have time!), but it works! Hope this helps, and good luck once again on your project.

Stephen

"Live long and PROGRAM......or at least do _something_ with all that time...!"

Oohh... Well... I'll use global variables for now, but then I'll go object-oriented (making a game engine!) when I finish this test game. Thanks to both of you! ;-)

http://www.xthost.info/sulfurik/
http://tsfc.ath.cx
ftp://tsfc.ath.cx
hotline://tsfc.ath.cx

Ruffle Mayo says ROFLMAO! :D

/*CHECK THIS OUT*/
char* arrayReturner( )
{
static char arr[20] = "Hello World";
return(arr);
}

main()
{
char *str;
str = arrayReturner( );
printf(str);
}

Santanu Sen
National Institute of Technology
Durgapur
India

Ooohh... I see... thanks! :-D

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