Chapter 15, Problem 2AW

Design an event handler that will execute when the calcAvai1ableCreditButton component is clicked. The event handler should perform the following:

• Declare the following Real variables: maxCredit, usedCredit, and avai1ab1eCredit.
• Get a value from a text box named maxCreditTextBox and assign it to the maxCreditvariable.
• Get a value from a text box named usedCreditTextBox and assign it to the usedCredit variable.
• Subtract the value in usedCredit from maxCredit and assign the result to availableCredit.
• Store the value in the availableCredit variable in a label component named availableCreditlabel.