explanation about x=x/10 in counting the number of digit in an int

[strongard63]

there is something that I can not understand in the following code:

int main()
{

int count = 0;
int x=125;

while(x!=0)
{

count++;

x=x/10;

}


}


if x is 125 so x=x/10 gives 125=12,5 which is something odd and impossible. what is the meaning of x=x/10??? what is x=x/10????? what is its role??? how it works???
any detailed and instructive help or explanation would be appreciated

[weaknessforcats]

This is integer arithmetic. So 125/10 is 12. Not 12.5 since integers have no decimal portion.

For 125:
First the count is 1.
Then, 125/10 is 12.

Second, the count is 2
Then 12/10 is 1

Third, the count is 3
Then 1/10 is 0
The loop stops. The final count is 3 and 125 has 3 digits.

The line x = x/10 is used to change x from its current value to a new value equal to the current value divided by 10.

10 is used since for integers in the base 10 number system, each column is a power of 10.