## CSci 105

# Introduction to Computers

### Laboratory Assignment # 14

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Intermediate LOGO Programming

1. Write a HyperStudio stack with card # 1 containing four buttons labeled *Add, Subtract, Multiply*, and *Divide* and use **HyperLOGO** to implement each of these button commands for two input numbers. Show the design of your command card and a **snap** of each of the output calculations.

2. Design card # 2 of this stack with a button labled *Average* which computes the average of an arbitrary number of positive numbers. Terminate the input with a negative "sentinel."