Reference no: EM132035854

Problem 1:

This question, we would like to implement a simple word guessing game in a Windows form Application. The program chooses a word at random and displays the number of letters of that word. The user will repeatedly guess letters until the full word has been discovered.

Description:

Your program should begin by randomly choosing one of the 100 words from the words.txt file. It should then display the number of blanks for the secret word. For example, if the secret word is BANANA, then your program should display something like this:

Word: _ _ _ _ _ _

The user will repeatedly guess letters until the whole word has been guessed. After each guess, the program should give feedback to the user. Either the letter is part of the secret word, in which case the letter should be displayed, or the letter is not found in the word, in which case the user should be notified. For each wrong letter, a counter will increment, and the game will end if the user makes 5 wrong guesses. You may be creative with your counter, use a "hangman" style counter, or use color code style, etc. The following depicts a situation (in "hangman" style) where the user has entered the letter A, followed by 3 wrong letters:

Word: _ A _ A _ A

In your program you should create variables for the word, the , and the number of wrong guesses that is accessible in all functions (see below). You may break your program down into as many methods as you'd like. However, you must include the following methods:

1. Create a method called that reads the file words.txt and randomly chooses a word. This function should be used (called) each time the game starts, storing the result in the variable called . Initially, should be a string of n underscores ( _ ) with n equal to the length of the secret word.

2. Create a method called that returns true or false depending on whether the user input is valid. A valid input is one that is one-character long. If invalid, an error message should be provided to the user. The function should also include a referenced variable to store the valid input.

3. Create a method called that simply takes the current and the number of missed guesses so far and displays them on the form.

4. Create a function called that takes the user's guess (one letter) and should update the if the guess is correct (the letter is in the word), or increment the "wrong guesses" counter. For example, in the iteration of the game shown in the figure above:
- the secret word is "BANANA"
- the display_string is "_A_A_A"
- the user guess is "N"
After executing the function , the new should be: "_ANANA"

Problem 2:

Write a console program that asks for two positive integers a and b. The program will then display all prime numbers between that range. Your program should check for whether a<b, that they are positive numbers, and that they are not strings. If an error occurs, specify the error to the user and continue to ask for the range.

Start by writing a method called that takes in two positive integers a and b (where a<b). Then simply prints out all the prime numbers between a and b.

You may also find it helpful to create a function called that takes in one positive integer n and returns true or false depending on whether it is a prime number.

Here are two runs of your program (the bold parts represent user inputs):

This program finds all primes between a and b Please enter a: 12
Please enter b: 72
Primes: 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71.

This program finds all primes between a and b Please enter a: 12
Please enter b: 7
Sorry a must be smaller than b. Please try again Please enter a: hello
Please enter b: world
Sorry a and b must be numbers. Please try again Please enter a: 12
Please enter b: 30
Primes: 13, 17, 19, 23, 29.