Write a program to Print the Kth Digit of number

Given a number we have to print the kth digit of a number .lets suppose we have a number 128 the first digit is 8 second digit is 2 and third digit is 1.

Example:

input: num =45326 ,k=2
output:2

input:4325343, k=4
output:5

Logic:

find the remainder of number untlil we reached at kth places. 

#include<iostream>
using namespace std;
int main()    
{    
 int num,k;
cout<<"enter the number "<<endl;
cin>>num>>k;
int rem;
while(num>0&&k!=0)
{
    rem=num%10;
    num=num/10;
    k--;
}
cout<<rem<<endl;  
 }  

Output:

enter the number :2345355 5
4

Time Complexity:O(N)

space complexity:O(1)