#include<stdio.h>
int main() {

    struct node {
        int data;
        struct node *link;
    };

    struct node *p, *q;
    p = (struct node *) malloc(sizeof(struct node));
    q = (struct node *) malloc(sizeof(struct node));

    printf("%d, %dn", sizeof(p), sizeof(q));

    return 0;
}