PL0源代码PL0PL0C版

#include #include #include #define NORW 13　 /*保留字的个数*/ #define TXMAX 100　/*标识符表的长度(容量)*/ #define NMAX 14　 /*数字允许的最长位数*/ #define AL 10　 /*标识符最长长度*/ #define AMAX 2047　/*寻址空间*/ #define LEVMAX 3　/*最大允许的块嵌套层数*/ #define CXMAX 200　/*类PCODE目标代码数组长度(可容纳代码行数)*/ #define STACKSIZE 500 /*类型定义*/ cha r *symbol[32]={"nul","ident","number","plus","minus","times","slash","oddsym", 　　"eql","neq","lss","leq","geq","lparen","rparen","comma", 　　"semicolon","period","becomes","beginsym","endsym","ifsym", 　　"thensym","whilesym","writesym","readsym","dosym","callsym", 　　"constsym","varsym","procsym"};　/*symobl类型标识了不同类型的词汇*/ r *symbol[32]={"nul","ident","number","plus","minus","times","slash","oddsym", 　　"eql","neq","lss","leq","geq","lparen","rparen","comma", 　　"semicolon","period","becomes","beginsym","endsym","ifsym", 　　"thensym","whilesym","writesym","readsym","dosym","callsym", 　　"constsym","varsym","procsym"};　/*symobl类型标识了不同类型的词汇*/