Chapter 5. PC #13. isPrime Method A prime number is a number that is evenly divisible only by itself and 1. For example, the number 5 is prime because it can be evenly divided only by 1 and 5. The number 6, however, is not prime because it can be divided evenly by 1, 2, 3, and 6. Write a method named isPrime, which takes an integer as an argument and returns true if the argument is a prime number, or false otherwise. Demonstrate the method in a complete program. The program should ask the user to enter a number for primality test or a negative number to exit. Tip: Recall that the % operator divides one number by another, and returns the remainder of the division. In an expression such as num1 % num2, the % operator will return 0 if num1 is evenly divisible by num2. Test Case 1 Please enter a number to check for primality or -1 to exit:\n 2ENTER 2 is a prime number.\n Please enter a number to check for primality or -1 to exit:\n 3ENTER 3 is a prime number.\n Please enter a number to check for primality or -1 to exit:\n 4ENTER 4 is not a prime number.\n Please enter a number to check for primality or -1 to exit:\n 25ENTER 25 is not a prime number.\n Please enter a number to check for primality or -1 to exit:\n 101ENTER 101 is a prime number.\n Please enter a number to check for primality or -1 to exit:\n -1ENTER Test Case 2 Please enter a number to check for primality or -1 to exit:\n -10ENTER Invalid input.\n Please enter a number to check for primality or -1 to exit:\n 0ENTER Invalid input.\n Please enter a number to check for primality or -1 to exit:\n 2ENTER 2 is a prime number.\n Please enter a number to check for primality or -1 to exit:\n -1ENTER

Microsoft Visual C#

7th Edition

ISBN:9781337102100

Author:Joyce, Farrell.

Publisher:Joyce, Farrell.

Chapter7: Using Methods

Section: Chapter Questions

Problem 1CP

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Test Case 1

Please enter a number to check for primality or -1 to exit:\n
2ENTER
2 is a prime number.\n
Please enter a number to check for primality or -1 to exit:\n
3ENTER
3 is a prime number.\n
Please enter a number to check for primality or -1 to exit:\n
4ENTER
4 is not a prime number.\n
Please enter a number to check for primality or -1 to exit:\n
25ENTER
25 is not a prime number.\n
Please enter a number to check for primality or -1 to exit:\n
101ENTER
101 is a prime number.\n
Please enter a number to check for primality or -1 to exit:\n
-1ENTER

Test Case 2

Please enter a number to check for primality or -1 to exit:\n
-10ENTER
Invalid input.\n
Please enter a number to check for primality or -1 to exit:\n
0ENTER
Invalid input.\n
Please enter a number to check for primality or -1 to exit:\n
2ENTER
2 is a prime number.\n
Please enter a number to check for primality or -1 to exit:\n
-1ENTER

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