This is a simple calculator that can perform addition, subtraction, multiplication, and division.

Run the following command to open the Calculator in interactive mode

Note: You can also use npm install -g to install the package globally and then use calc command to run the program from anywhere.

In interactive mode, you can perform multiple operations one after another. To exit the interactive mode, press Ctrl + C. or select Exit

Note: First type the first number, then select the operation, and then type the second number. The result will be displayed on the screen. then the result will be used as the first number for the next operation.

• add - Adds two numbers or more
• sub - Subtracts two numbers or more
• mul - Multiplies two numbers or more
• div - Divides two numbers or more
• help - Displays the help menu

• The calculator can only perform one operation at a time. means, you can't add and subtract at the same time. e.g. node index.js add 10 5 sub 2 1
• The calculator can only accept numbers with spaces between them. For example, add 25 43 is valid, but add 25,43 is not.