Write a flex program to detect the following: • identifiers/words operators • keywords count the number of semicolon and full-stop. • count the identifiers/words and line numbers. After executing the program the output will be like the following

Write a flex program to detect the following: • identifiers/words operators • keywords count the number of semicolon and full-stop. • count the identifiers/words and line numbers. After executing the program the output will be like the following

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Concept explainers

Hiring problem

The term "hire" means "to employ" or "to obtain services for a fee." When you hire someone, you are employing or paying them to perform a certain task for you. A step-by-step method for hiring a new employee is an efficient and successful hiring process in which a business determines its talent needs, recruits from its talent pool, and hires the best-qualified individuals. The hiring problem is a well-known decision-making problem in the analysis of algorithms. The problem is solved by designing an efficient algorithm to choose the best candidate from a list of n candidates.

Question

1. Create a file named "input.txt" with the following lines:
int a, b, cl;
a=10, b= 20;
c1 = a + b;
this is a program.
Write a flex program to detect the following:
• identifiers/words
• operators
• keywords
• count the number of semicolon and full-stop.
• count the identifiers/words and line numbers. After executing the program the output will be
like the following:
Portion of our output
int -
keyword
a - identifier/word
- operator
b -
identifier/word
- operator
c1 -
identifier/word
this - identifier/word
number of identifier/word
12
line number - 4

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