pointer p, addr of pointer p, value of *p

C++编程中指针操作的深入理解

转载于 2015-06-16 09:03:00 发布 · 77 阅读

0 ·

CC 4.0 BY-SA版权

原文链接：http://www.cnblogs.com/FEMONT/p/4579869.html

本文详细解析了C++编程中指针的基本概念、指针运算及其应用，通过实例展示了如何使用指针进行变量引用和修改，深入探讨了指针的内存地址操作，为读者提供了一次全面的指针操作学习之旅。

void pointer(int *p)
{
  int a = 11;
  printf("\nthe p is %p , addr is %p, *p is %d",p , &p, *p);
  *p =11;
  printf("\nthe p is %p , addr is %p, *p is %d",p , &p, *p);
  p = &a;
  printf("\nthe p is %p , addr is %p, *p is %d",p , &p, *p);
}

int main()
{
 int b =22;
 int *p = &b;

 printf("the p is %p , addr is %p, *p is %d",p , &p, *p);
 pointer(p);
 printf("\nthe p is %p , addr is %p, *p is %d\n",p , &p, *p);
}

运行结果：

the p is 00A0FEE4 , addr is 00A0FEDC, *p is 22
the p is 00A0FEE4 , addr is 00A0FEE0, *p is 22
the p is 00A0FEE4 , addr is 00A0FEE0, *p is 11
the p is 00A0FEE8 , addr is 00A0FEE0, *p is 11
the p is 00A0FEE4 , addr is 00A0FEDC, *p is 11

转载于:https://www.cnblogs.com/FEMONT/p/4579869.html