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ICS3UC Page 5 of 5 Worksheet: Exercises: 1. Write a program to calculate a cash register receipt for items purchased by the user. The user will enter the costs of items; the user will enter a negative number to stop. The program must calculate and output the subtotal of the items entered, the tax and the total including tax. See the example input/output. The information entered by the user has been highlighted. Ex. Enter the cost of your purchase: 10 Enter the cost of your purchase: 5 Enter the cost of your purchase: 2.50 Enter the cost of your purchase: -1 Subtotal: HST (13%); Total: $17.50 $2.28 $19.78 Make sure that the HST rate is a constant. Follow proper formatting techniques. 2. Calculate and output the product for a set of integers, input ONE AT A TIME. This process will terminate when the product equals or exceeds 1000. The product in this case will be an accumulator since we keep multiplying the previous product with the new factor 3. Write a guessing game as follows: The user will be asked to enter two numbers - a minimum integer and a maximum integer The min and the max will represent the range that the