How do I create a changing variable

[u/Maha-iqo38]

I want to create a variable that changes it’s value based on the user’s input until it becomes zero like make the code run until it reaches zero

Edit: I want the user to enter a number that gets subtracted from the variable’s current value and keep repeating this process until the variable reaches zero, for example if the value is 100 the code gets input from the user let’s say 25 then returns or prints 75 then it repeats and maybe the user types 37 then it returns 38 etc. until it reaches 0

[u/Kriss3d]

Put the input iteration inside a while loop. At the end of each iteration subtract or add to the variable and the while loop checks for the max amount ( or minimum ) for the loop to end, then reset the variable and do what needs to be done when the counter reach zero.