指针是C和C++语言编程中最重要的概念之一，也是最容易产生困惑并导致程序出错的问题之一。利用指针编程可以表示各种数据结构, 通过指针可使用主调函数和被调函数之间共享变量或数据结构，便于实现双向数据通讯；并能像汇编语言一样处理内存地址，从而编出精练而高效的程序。指针极大地丰富了Ｃ和C++语言的功能。-Pointer is a C and C++ Language programming in the concept of one of the most important and most easily lead to confusion and lead to error, one of the issues. Pointer programming using a variety of data structure can be expressed through the main function pointer can be used and be transferred between the shared variable function or data structure, to facilitate the realization of two-way data communication　and the same as the assembly language to deal with memory addresses, which prepared concise and efficient procedures. Pointer has greatly enriched the C and C++ Language functions.