solution

Open the Grades Solution (Grades Solution.sln) file contained in the ClearlyVB2012 Chap18Grades Solution folder. The interface provides a text box for the user to enter a letter grade. When the user clicks the Count button, the button’s Click event procedure should display (in a message box) the message “Grade: number”, where Grade is the letter grade entered by the user, and number is the number of times the student earned the grade. Declare a class-level array, and then use the form’s Load event procedure to assign the following letter grades to the array elements: A, B, C, A, B, A, F, A, D, B, and C. Use the For…Next statement to code the btnCount_Click procedure. Save the solution and then start and test the application. Close the Code Editor window and then close the solution. (See Appendix B for the answer.)