[Solved] Why would we multiply something by 10 if it’s zero

Question

num is initialised to be zero only in the beginning.
After each iteration, its value changes as per the condition defined.
As a simplified example, you can see in the for loop, a variable is initialised to zero and then condition is provided and instructed to increment or decrement (usually) until the condition satisfies.
Initialising a variable to zero is to assign the value 0 to it if not, it will take the value of memory block.

Accepted Answer

num is initialised to be zero only in the beginning.
After each iteration, its value changes as per the condition defined.
As a simplified example, you can see in the for loop, a variable is initialised to zero and then condition is provided and instructed to increment or decrement (usually) until the condition satisfies.
Initialising a variable to zero is to assign the value 0 to it if not, it will take the value of memory block.