Struct pointer demo

main.c

#include <stdio.h>
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>

/**
 * Mini wrapper function for malloc
 */
void* Malloc(size_t size) {
   void *vptr = malloc(size);
   if(vptr != NULL)
   	   return vptr;
   else
   	   assert(false);
}

typedef struct Person {
 char		*name;
 int		age;
 int		height;
 int		weight;
}Person;

Person *Person_create(char *name,int age, int height, int weight) {
	 Person *who = Malloc(sizeof(Person));
	 assert(who != NULL);

	 who->name = strdup(name);
	 who->age = age;
	 who->height = height;
	 who->weight = weight;

	 return who;
}

void Person_destroy(Person *who) {
	 assert(who != NULL);

	 //very important if we have
	 //members also pointer 
	 //we have also need to free them
	 free(who->name);
	 free(who);
}

void Person_print(Person *who) {
	 printf("Name : %s\n",	who->name);
	 printf("tAge: %d\n",	who->age);
	 printf("theight: %d\n", who->height);
	 printf("tweight: %d\n", who->weight);
	
	 printf("\t Sizeof Person = %lu\n",sizeof(*who));
}
int main(int argc, char *argv[]) {
	 Person *joe = Person_create("Joe Alex", 32, 64, 140);
	 Person *brad = Person_create("Brad Pit", 42, 68, 160);

	 printf("Joe is at memory location %p:\n",joe);
	 Person_print(joe);
	 printf("Brad is at memory location %p:\n",brad);
	 Person_print(brad);

	 Person_destroy(joe);
	 Person_destroy(brad);
}