Answered: Write a program which inputs 2 numbers…

Computer Networking: A Top-Down Approach (7th Edition)

7th Edition

ISBN:9780133594140

Author:James Kurose, Keith Ross

Publisher:James Kurose, Keith Ross

Chapter1: Computer Networks And The Internet

Section: Chapter Questions

Problem R1RQ: What is the difference between a host and an end system? List several different types of end...

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Question

Write a program which inputs 2 numbers N & R from user. To take input from user, there should be function name validateInput(). Along with input from user, this function also validates user input (input should be greater than zero). It would keep scanning user input until user enter valid value for both variables N & R.

Once the appropriate input is done, show user a menu:

Enter 1 to calculate product
Enter 2 to calculate factorial
Enter 3 to calculate permutation
Enter 4 to calculate combination

The program should then perform the task according to the user choice by calling appropriate function for each task mentioned above.

Definition of each function is given below:

calculateMultiplication() will multiply the numbers N & R (entered by user) and will display product of both numbers.
calculateFactorial() will calculate factorial of N. You have to calculate factorial by using recursion.
calculatePermutation() will calculate and display permutation by using this formula