proqram problem

[Hesen]

#include <iostream>
using namespace std;
main(){
 int n;
 long int k=0;
cin >> n;
	 do {
		n=n/10;
		k++;
	} while (n>0);
	cout <<k<<"\n";
}

this pro has to count numbers of digits.but k doesn't cross 10 :/

[BDA]

Excuse my English
In C you can't input number greater than 2147483647, because int type is 4 bytes.
You should use string or read char by char.
Why you do not use the Russian language?

[Hesen]

thank u i have solved this sum/the problem was "int"
i used long long instead of int & the problem solved