New Perspectives Classic Labs

VISUAL PROGRAMMING

In the Visual Programming Lab, you use an event-driven, object-oriented programming environment to create simple programs. This Lab provides a "taste" of what it would be like to program in a visual language such as Visual Basic.  

1.  Click the Steps button to learn how to create a graphical user interface containing buttons, labels, and text boxes. As you work through the Steps, answer all of the Quick Check questions. After you complete the Steps, you will see a Quick Check Summary Report of your answers. Follow the directions on the screen to print this report.  

2.  In Explore, create a program to calculate the total cost of carpeting a room. Test your program, then print it showing the cost of $12.99/sq. yd. carpeting for a 10 x 14 foot room.  

Assume that the room is rectangular. The known information is the length and width of the room, and the price of a square yard of carpet. You must calculate:

the square feet of carpet needed (length * width of room)

the square yards of carpet needed (square feet/9)

total price of carpet (Price per square yard * the square yards needed)

3.  Suppose you like to shop from catalogs. Your favorite catalog is having a sale-selected merchandise is discounted 10%, 20%, 30%, or 40%.You want to know how much you'll save if you buy some of the merchandise you want. In Explore, create a program to calculate savings. Test your program, then print it showing the savings for a $863 item at 30% discount. 

Assume that the items you purchase will be discounted and that there is no additional charge for shipping. The known information is the original price of the item and its discount-10%, 20%, 30% or 40%.Calculate how much you will save. (For example, for a 10% discount, multiply the original cost by . 1. )

4.  In your recording studio, studio musicians are paid by the hour, but your sound technicians are salaried. You started to make a program to calculate weekly paychecks, but it doesn't seem to work. 

Your assumption is that some employees are salaried and some are hourly. You know the salaries for salaried employees. You know the hourly wage and the hours worked each pay period by the hourly employees. You want to calculate the weekly pay for salaried employees (Wages / 52) and the weekly pay for hourly employees (Wages * Hours). 

5.  In Explore, open the program PAY. VPG and test it. Enter 32240 in the Wages box, then click the Salaried button. The output should be 620.Next enter 8 in the Wages box and 40 in the Hours box. Click the Hourly button. The output should be 320.Find what's wrong with this program and correct it. Print your solution.