Chapter 8, Problem 2PP

Program Plan Intro

Average Number of Letters

Program plan:

Design the form:

• Place two label box controls on the form, and change its name and properties.
• Place one text box control on the form, and change its name and properties to get the string from user.
• Place one command button control on the form, and change its name and properties to count the word in a string and determine the average of number of letters and then display it.

In code window, write the code:

Program.cs:

• Include the required libraries.
• Define the namespace “Average”.
  • Define a class “Program”.
    • Define a constructor for the class.
    • Define required functions to run “Form1”.

Form1.cs:

• Include the required libraries.
• Define namespace “Average”.
  • Define a class “Form1”.
  • In btnCount() method,
    • Call countWords() method to count the number of words in a sentence.
    • Call countCharacters() method to find the average number of words in a sentence.
    • Display the count and average number of words into label box.
  • In countWords() method,
    • Declare the required variables.
    • Check whether “i” is equal to “0” and any white space in a sentence. If yes, set the word begin.
    • Otherwise, check whether “i” is greater than “0” and any white space in a sentence. If yes, set the word begin.
    • Check whether the word begin is set and check the word is digit or letter with correct punctuation. If yes, increment the counter value by “1”.
    • Return the number of words.
  • In countCharacters() method,
    • Declare the required variables.
    • Check whether string length is equal to “0”. If yes, continue the execution.
    • Otherwise, calculate the word length.
    • Check whether the character is punctuation. If yes, decrement the word length.
    • Return the count of word length.
  • Close the application.

Form Design:

View the Form Design in IDE.

Set the Form Control properties in Properties window as follows:

Object	Property	Setting
Form1	Text	Program8_2
label1	Text	Enter a string:
textBox1	Text	(Empty)
lblResult	Text	(Empty)
btnCount	Text	Count Words

• Add two label box controls to the form from Toolbox.
• Add one text box control to the form from Toolbox.
• Add one command button control to the form from Toolbox.