Algorithm to Make a Simple Calculator

• Initialize two float variables num1 and num2 to take two operands as input.
• Initialize a char variable op to take the operator as input.
• Start the switch statement with op as the expression of the switch statement.
• Now, create cases for different arithmetic operations.
  • ‘+’ for addition
  • ‘-‘ for subtraction
  • ‘*’ for multiplication
  • ‘/’ for division
  • Default case for the case when the entered operator is not one of the above operators.
• The operation will be performed based on the operator entered as the input.

A simple calculator is a device used to perform basic arithmetic operations such as addition, subtraction, multiplication, and division. It makes arithmetic calculations easier and faster. In this article, we will learn how to code a simple calculator using C++.