Why is memory necessary for storing values?

Question

It was being taught that creating the variable is necessary for a space in memory for storing values. What is the necessary needed for?

Answer 1

If you are writing a book you will need paper. The paper in that case is your "word storage".
On the computer it's the same thing. I mean you need to put the numbers somewhere if you want to work with them. And that somewhere is memory!

To add two numbers a and b:
Copy a from memory to a CPU register
Copy b from memory to a CPU register
Calculate a+b, store it in a CPU register c
Copy register c back to memory

Answer 2

Thank you very much. Huge respect and gratitude!!😊