I can''t seem to convert this function from c to c++. int push(int which, int size) { stack_node *node = malloc(sizeof(stack_node)); node->size = size; node->next = poles[which].head; poles[which].head = node; poles[which].depth++; return 0; } here is the structure: typedef struct stack_node { int size; struct stack_node *next; } stack_node; typedef struct stack { struct stack_node *head; int depth; } stack; stack poles[4]; any help would be greatly appretiated

When declaring a variable whose type is a struct you don''t have to write struct before it... Dunno if that makes any difference... Maybe a couple of other things... see if this helps...

ie, from your example...

    typedef struct _stack_node{  int size;  inline stack_node *next;} stack_node;typedef struct _stack{  stack_node *head;  int depth;} stack;    

Dunno if that works at all, but you can try it. You function looks fine, I suppose... Unless it''s giving you error messages... If it is then you should probably post them.

S.

Thanks but the sturture works fine, the function is what gives me problems. I get this error message:
: error C2440: ''initializing'' : cannot convert from ''void *'' to ''struct stack_node *''
Conversion from ''void*'' to pointer to non-''void'' requires an explicit cast
Error executing cl.exe.

If I use inline in place of struct I get error:

: error C2433: 'next' : 'inline' not permitted on data declarations

I'm using MSVC++ 6.0

Edited by - webxcraz on September 24, 2000 2:55:58 PM

stack_node *node = malloc(sizeof(stack_node));

As the error says, it requires an explicit cast...

stack_node *node = (stack_node*)malloc(sizeof(stack_node));

"Paranoia is the belief in a hidden order behind the visible." - Anonymous

quote: Original post by Webxcraz

If I use inline in place of struct I get error:

: error C2433: ''next'' : ''inline'' not permitted on data declarations

I''m using MSVC++ 6.0

Edited by - webxcraz on September 24, 2000 2:55:58 PM

You can only inline functions. Not data types...that just doesn''t make sense

"Paranoia is the belief in a hidden order behind the visible." - Anonymous

Ya, I thought that inline thing was only for functions, I just suggested it because it might have worked for some odd reason.

S.

thanks guys for your help...function is working!