N.Wirth 编写的“PL/0 语言的编译程序”，包含C和Java两个版本，而且内附改进后可以实现if else 、for 以及 dowhile(repeat) until等之前的编译器没有的功能。-This is a compiler for “PL/0”. The development environment is C and Java. You can use it to compile the "PL/0" included "for ","if else","dowhile