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.
Prerequisite: Flex (Fast lexical Analyzer Generator).
Given an input, the task is to check if the input is digit or not.
Input: 28 Output: digit Input: a Output: not a digit. Input: 21ab Output: not a digit.
Below is the implementation:
- Lex program to check whether input number is odd or even
- Lex program to take input from file and remove multiple spaces, lines and tabs
- Lex Program to print the total characters, white spaces, tabs in the given input file
- Lex program to check whether a given number is even or odd
- Lex program to check whether given string is Palindrome or Not
- Lex program to check if a Date is valid or not
- C program to check syntax of 'for' loop
- Lex program to check perfect numbers
- Lex Program to check whether a number is Prime or Not
- Lex Program to check valid email
- Lex program to check valid Mobile Number
- YACC program to check whether given string is Palindrome or not
- Lex program to check whether an year is a leap year or not
- Lex program to check whether given number is armstrong number or not
- Input Buffering in Compiler Design
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