a6q4 - CS 116 Assignment 6 Question 4 Ru Wang r46wang...

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## CS 116 Assignment 6 Question 4 ## Ru Wang r46wang 20319247 ## scheme_math: void -> void ## purpose: this function neither consume or produce anything. But it evaluates expressions ## Effects: It asks to input 3 values: one mathematical operator, + - * or / or the word quit, and 2 operands in integer form. Result displays according to the following rules: ## - It displays an integer of the evaluated expression if the operator entered is one of + - or * ## - It displays a float of the evaluated expression if the operator entered is / ## - It displays Error: unknwon operator if the entered operator is not one of + - * and / ## - It displays Error: attempted divide-by-0 if it attempts to divide by zero ## - It ends the operation if quit is entered. ## Example: ## 1. Entering +, 50, and 30, respectively at the first, second, and third prompts should display 80 ## 2. Entering -, 60, and 30, respectively at the first, second, and third prompts should display 30 ## 3. Entering *, 25, and 3, respectively at the first, second, and third prompts should display 75 ## 4. Entering /, 6, and 3, respectively at the first, second, and third prompts
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