#include <stdio.h>
 
int main(void) {
    // NULL pointer is defined as (void *)0.
    char * i = NULL;
    char * j = (void *)0;
 
    //dereferancing a NULL will crash a system.
    //printf("%d",*j);
 
    printf("size of void : %d \n",sizeof(void));
    printf("size of void * : %d \n ",sizeof(void *));
}