Lex Program to accept string starting with vowel
Lex is a computer program that generates lexical analyzers. Lex reads an input stream specifying the lexical analyzer and outputs source code implementing the lexer in the C programming language.
The commands for executing the lex program are:
lex abc.l (abc is the file name) cc lex.yy.c -efl ./a.out
Let’s see lex program to accept string starting with vowel.
Input: animal Output: Accepted Input: zebra Output: Not Accepted
Below is the implementation: