Can anyone help me to understand this code?

Question

#include <stdio.h>
int main ()
{int x= 123;
int sum= 0;

while(x>0)
{ sum+= x%10;
x = (x - x%10)/10;
}
printf("%d",sum);
}

It's output is 6.

Answer 1

This code will seprate the Entered number one by one adn sum +=x/10 will add all sepratated numbers write one copy how values changing you will understood.
If you divide any Number by 10 then you will get last number as a Remainder

Answer 2

Put value and calculate how Values varying

Answer 3

🗡️Jasprit What x = (x-x%10)/10 will do?