迷途指针

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

void main()
{
	int *p = (int *)malloc(sizeof(int)* 10);
	printf("%p\n\n", p);

	for (int i = 0; i < 10; i++)
	{
		p[i] = i;
		printf("%d\n", p[i]);

	}

	free(p);
	printf("\n%p\n", p);						//内存空间释放之后，指针依旧指向原来的地址，称为迷途指针
	p = NULL;									//置空，以免调用导致出错

	system("pause");
}