Counting digits using while loop

Question

I was recently making a program which needed to check the number of digits in a number inputted by the user. As a result I made the following code:

int x;            


        

Answer 1

You could read the user input as a string, and then count the characters? (After sanitising and trimming, etc.)

Alternatively, you could get a library to do the hard work for you; convert the value back to a string, and then count the characters:

cin >> x;
stringstream ss;
ss << x;
int len = ss.str().length();