说明：  PL0功能的扩充 一、完成的实验内容及说明 基本内容 （1）扩充赋值运算：+= 和 -= （2）扩充语句 REPEAT <语句序列> DOWHILE <条件> 其中，<条件>是循环条件，即条件成立时，重复执行循环体的< 语句序列> 增加内容 （1）增加运算：++ 和 --。 （2）增加类型：① 字符类型； ② 实数类型。 （3）扩充函数：① 有返回值和返回语句；② 有参数函数。 （4）增加一维数组类型 二、实验环境与工具 （1）计算机及操作系统：PC机，WindowsXP （2）程序设计语言：C++Builder5，VC 6.0 （3）教学型编译程序：PL/0
(PL0 functional expansion of a complete description of the experimental content and the basic content (1) Expansion assignment operator:+ = and-= (2) Expansion statement REPEAT < statement sequence> DOWHILE < terms of " where" condition " is cyclical conditions, namely the condition was established, repeated loop of the " statement sequence" additional content (1) increasing the operation:++ and-. (2) increasing the types: ① character type ② real number type. (3) expansion of functions: ① to return to the values and return statements ② a parameter function. (4) to increase one type of two-dimensional array, experimental environment and tools (1) Computer and OS: PC machine, WindowsXP (2) Programming Languages: C++ Builder5, VC 6.0 (3) teaching-oriented compiler: PL/0)