While Loops Challenges

Complete the following challenges. It may be helpful to create a new .cs file for each challenge, or create a new project entirely.

1. While Loop Guessing game

Randomly pick a number, and use a while loop to ask a user to guess a number between 1 and 20. Make them guess until they are correct.

• If the users guess is too high tell them too high.
• If the guess is too low, tell them too low.
• If the guess is correct, congratulate them, and break out of the loop.

2. Calculate the next leap years

Leap years are defined as follows:

• If the year is divisible by 4 then it is a leap year
• Except if the year is divisible by 100 then it IS NOT a lear year
• Except if the year is divisible by 400 then it is a leap year

Write a program that does the following:

• Using the current year, generate the next 50 leap years
• Print those years to the console

3. Decreasing value

Repeatedly print the value of a variable xValue, decreasing it by 0.5 each time, as long as xValue remains positive. Start by asking the user for a number, then store the value in the xValue variable.

4. Squares

Print the square of the first 25 odd positive integers.

5. Sums

Write a program with a while loop that computes the sum of first n positive integers:

sum = 1 + 2 + 3 + ... + n

Examples

n = 5: sum = 15 n = 19: sum = 190

Allow the user to input the value of n.

6. Factors

Write a program that calculates the largest factor of a number (not including the number itself).

Examples

n = 24: output = 12 n = 19: output = 1 n = 27: output = 9

Allow the user to input the value of n.

7. Diamond

Write a program that prints out an ASCII diamond of stars, with a height supplied by the user. The height is defined by the distance between the top line of stars and the middle line of stars.

Examples

User inputs 1:

 *
* *
 *

User inputs 3:

   *
  * *
 *   *
*     *
 *   *
  * *
   *

8. Menu-based application

Create a calculator application where the user is prompted with a menu, and can select which function they would like to perform. If they ever enter an invalid input, they should be prompted again to enter a valid input. The application should allow the user to add, subtract, multiply, or divide. There should also be a secret option (not shown on the menu).