Question 1. Write a lex program for each of the following.

a) To print the number of words in a text file. Test your code on the file test_part_a.txt

b) To print the longest word (and the number of characters in it) in a file. Test your code on the file test_part_b.txt

c) To print the number of vowels and consonants in a file. Test your code on the file test_part_c.txt

d) To print the number of positive and negative integers and real numbers in a file. Test your code on the file test_part_d.txt