Thread: need help with: pointer to pointer to an array of struct

Hey guys, I have a little code like this:

Code:

#include <stdio.h>
#include <stdlib.h>
#include <malloc.h>
#include <string.h>

#define  KH_SUCCESS				0x00
#define EKH_MAX_PERSON_EXCEED	0x01

struct _KPerson {
	char *name; // person name
	int age; // person age
};
typedef struct _KPerson KPerson;

struct _KHome {
	KPerson **plist; // pointer to pointer of struct array
	int msize; // max size alloweed
	int csize; // current size
};
typedef struct _KHome KHome;

KPerson* kperson_new(const char* _n, const int _a)
{
	KPerson *kp;
	kp = (KPerson *) calloc( 1, sizeof( KPerson ) );
	
	kp->name = (char *) calloc( strlen(_n) + 1, sizeof( char ) );
	strncpy( kp-> name, _n, strlen(_n) + 1 );
	
	kp->age = _a;
	
	return kp;
};

KHome* khome_new( const int _ms )
{
	KHome *kh;
	int i = 0;
	kh = (KHome *) calloc( 1, sizeof( KHome ) );
	

	kh->plist = (KPerson **) calloc( _ms, sizeof( KPerson * ) );	
	for( ; i < _ms; ++i )
		kh->plist[i] = NULL;
	/* ??? [1] - how to initialize all persons in list to NULL */
	
	kh->msize = _ms;
	kh->csize = 0;
	
	return kh;
};

int khome_insert( KHome *kh, const KPerson* kp )
{
	if( kh->csize >= kh->msize ) 
		return EKH_MAX_PERSON_EXCEED;

	/* ??? [2] - How to insert a new person value into home person list */
	return KH_SUCCESS;
};

int main( int argc, char **argv )
{
	/* testing code here */

	return 0;
}

As you can see above, I inserted my 2 questions at place

??? [1] - how to initialize all persons in list to NULL
??? [2] - How to insert a new person value into home person list

I wonder of how to access each element in this kind of pointer.

Code:

struct _KHome {
	KPerson **plist; // pointer to pointer of struct array
	int msize; // max size alloweed
	int csize; // current size
};
KHome *kh;

How to access each element in plist ?

Note: i don't want to use linked list here, just raw dynamicaly allocated pointer style.