《学习使用C指针(影印版)》章节试读

《学习使用C指针(影印版)》的笔记-第12页 - Introduction

When NULL is assigned to a pointer, it means the pointer does not point to anything.

《学习使用C指针(影印版)》的笔记-第10页 - Introduction

The address used by a program is a virtual address. The operating system maps the virtual address to a real physical memory address when needed.