can someone explain me this program?

[kamilhassaan]

This program tells us the number of digits we enter. For example;
1. If we enter 1, the program will display "You entered 1 digit(s)"
2. If we enter 51, the program will display "You entered 2 digit(s)"
3. If we enter 846, the program will display "You entered 3 digit(s)"
4. If we enter 2053, the program will display "You entered 4 digit(s)"

#include <iostream>
using namespace std;
int main ()
{
	int num=0,counter=0;
	
	cout<<"Please enter a number : ";
 	cin>>num;

	while(num>0)
	{
		num=num/10;
		counter++;
	}
	
	cout<<"You entered "<<counter<<" digit(s)";

	return 0;
		
}

What i can't understand is the WHILE LOOP. Why is the entered number being divided by 10? Please explain that what is happening in the WHILE LOOP.

[coder777]

This is base on integer division. There is no position after the decimal point.

Hence 2053 -> num=num/10; -> 205 -> num=num/10; -> 20 -> etc. until 0

This way you can count the digits.