Simple Calculator to Perform Addition
Explore how to build a simple calculator in Ruby that adds two integers entered by the user. This lesson helps you understand reading keyboard input, storing values in variables, performing addition, and displaying results with string interpolation. Gain foundational skills in command-line interaction and basic data operations in Ruby.
We'll cover the following...
We'll cover the following...
Problem
Develop a simple calculator that adds two integers (up to 99) from user inputs and prints out the sum.
I am an adding machine, and I am good at it.Enter first number: (type 1, press Enter)Enter second number: (type 99, press Enter)Thinking ...Got it, the answer is: 100
Demo of a simple calculator
Purpose
Read a user’s keyboard input
Use variables for mathematic operations ...