关于指针

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

typedef struct {
int a;
char * ch;
int aa;
}node;

int main()
{
int *i = NULL;
int ii = 10;
i = ⅈ
printf("local %p\n", i);
node * aa = (node*)malloc(sizeof(node));
printf("local %p\n", aa->ch);
if(aa->ch ==NULL){
printf("local %p\n", aa->ch);
}

node bb;
printf("local %p\n", bb.ch);
free(aa);
return 0;
}