help

来自「C语言表达式语法分析器」· 代码 · 共 8 行

-h|--help|help      show help.
-s|--show|show      show all the variables the program stores.
-f|--function       show functions it supports.
-e|exit|-q|quit			exit the program.
-t filename					show the content of filename
-i filename					input from filename									
*.txt               analysis the content of *.txt