05-simple-math

Simple Math

• Ruby
• Go

Problem Statement

Write a program that prompts for two numbers. Print the sum, difference, product, and quotient of those numbers as shown in the example output:

Example Output

What is the first number? 10
What is the second number? 5
10 + 5 = 15
10 - 5 = 5
10 * 5 = 50
10 / 5 = 2

Constraints

• Values coming from users will be strings. Ensure that you convert these values to numbers before doing the math.
• Keep the inputs and outputs separate from the numerical conversions and other processing.
• Generate a single output statement with line breaks in the appropriate spots.

Analysis

Inputs:

• first number
• second number

Processes:

• prompt for two numbers
• find their sum
• find their difference
• find their product
• find their quotient
• print results

Outputs:

• sum
• difference
• product
• quotient

Test Plan

Input:

• first number: 10
• second number: 5

Expected result:

• sum: 15
• difference: 5
• product: 50
• quotient: 2

Pseudocode

SimpleMath
  Prompt for firstNumber with "What is the first number?"
  Prompt for secondNumber with "What is the second number?"

  sum = firstNumber + secondNumber
  difference = firstNumber - secondNumber
  product = firstNumber * secondNumber
  quotient = firstNumber / secondNumber

  Display "{firstNumber} + {secondNumber} = {sum}
           {firstNumber} - {secondNumber} = {difference}
           {firstNumber} * {secondNumber} = {product}
           {firstNumber} / {secondNumber} = {quotient}"
End