Chapter 2.1. Simple Calculations

In this chapter we are going to get familiar with the following concepts and programming techniques:

  • What is the system console?
  • How to read numbers from the system console?
  • How to work with data types and variables, which are necessary to process numbers and the operations between them?
  • How to print output (a number) on the console?
  • How to do simple arithmetic operations: add, subtract, multiply, divide, string concatenation?


Watch a video lesson on this chapter here:

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