In this exercise, you'll develop a form that tells how many quarters, dimes, nickels, and pennies are needed to make change for any amount of change from 0 through 99 cents. One way to get the results is to use the division and modulus operators and to cast the result of each division to an integer.
1. Start a new project named Change Calculator in the Extra Exercises \Chapter On Change Calculator directory.
2. Add labels, text boxes, and buttons to the default form and set the properties of the form and its controls so they appear as shown above. When the user presses the Enter key, the Click event of the Calculate button should fire. When the user presses the Esc key, the Click event of the Exit button should fire.
3. Create an event handler for the Click event of the Calculate button. Then, write the code for calculating and displaying the number of quarters, dimes, nickels, and pennies that are needed for the change amount the user enters. This code should provide for integer entries, but you can assume that the user will enter valid integer values.
4. Create an event handler for the Click event of the Exit button that closes the form.
5. Test the application to be sure it works correctly.