- ex
grep -En '\b[a-zA-Z]*[A-Z][a-zA-Z]*\b' g.txt带有大写字母的单词
- 词法错误 lexical:
int 2var = 0; - 语法错误 ‘syntax:
int a int b; - 语义错误 semantic:
int g(); int main() { f(); }调用不存在的符号.
Article title：1-正则表达式
Article author：Julyfun
Release time：Dec 4, 2024
Original link：https://how-to.fun/blog/notes/julyfun/大四上/编译原理/1-正则表达式
Copyright 2025
Sitemap