I give hints on how hard each exercise is. Complete just one of:

1. Complete the Boolean operators project (see VB5.ppt for tips) (medium)

2. Complete the quadratic equation form (see VB5.ppt for tips). Handle data input errors and the possibility of complex roots. (easy -medium)

3. Complete the GPA calculator but provide for +/- grades and varying credit values. Also provide a clear button. Be sure to check if input is legal. You’ll need to change the form GUI to add clear button and label and textbox (or a combobox) for course credits. (medium-hard)

4. Complete the calculator interface project. Now you should be able to provide operator functionality. This project is still tricky and is probably the hardest.