array of structs

Hi All

I tried to construct an array of structs, but it doesn't compile

Code:

#include <stddef.h>
#include <stdlib.h>
#include <regex.h>
#include <stdio.h>
#include <string.h>

struct Abc {
  int *x ;
} *st ;

int main(void) {
  st = malloc( 2 * sizeof(*st) ) ;
  st[0] = (struct Abc*)malloc(sizeof(struct Abc) ) ;
  st[1] = (struct Abc*)malloc(sizeof(struct Abc) ) ;
}

I guess I do something fundamentally wrong here! Any suggestions ?

thnx
LuCa

Try this.

Code:

#include <stddef.h>
#include <stdlib.h>

struct Abc {
  int *x ;
} ;

int main(void) {
  struct Abc **st = malloc( 2 * sizeof(*st) ) ;
  st[0] = (struct Abc*)malloc(sizeof(**st) ) ;
  st[1] = (struct Abc*)malloc(sizeof(**st) ) ;
  return 0;
}

That creates an array of arrays with an Abc**.

You can also do this.

Code:

#include <stddef.h>
#include <stdlib.h>

struct Abc {
  int *x ;
} ;

int main(void) {
  struct Abc *st = malloc( 2 * sizeof(*st) ) ;
  return 0;
}

Then st[0] is one element, and st[1] is another element. It's just that I've created an array of structures, not an array of pointers to dynamically allocated structures.

wow, thats fast, thanks a lot! I guess I still have to get used to pointers to pointers!