1.	Write a C program to identify whether a giver line is a comment or not.
2.	Write a C program to test whether a given identifier is valid or not.
3.	Write a C program to test whether a given identifier is valid or not.
4.	Write a C program to simulate lexical analyzer for validating operators.
5.	Write a C program to check whether string is recognized or not under the following nfa. (Picture in mobile)
6.	Write a C program to simulate whether string is recognized or not under the following DFA (picture in mobile)
7.	Write a C program to find the number of whitespaces and newlines.
8.	Suppose a list of number given from keyboard in an array.
Find – avg, max, min, sort in ascending order, sort in descending order
9.	Suppose a number is given from keyboard. Then count the digit of that number, sum of digit, reverse the number.