How to know the digit of int number ?

Question

We have (7641)it's int number!!!

1) 7641 ---> 4 \\its num of digit

2) 7641 ---> 7614 \\exchange

3) 7641 ---> 1647 \\exchange

4) 7641 ---> 8752 \\+1

5) 7641 ---> 6530 \\-1

6) 7641 ---> 18 \\sum

7) 7641 ---> 6641 \\7-1

8) 7641 ---> 7641 \\exchange

9) 7641 ---> 8 \\7+1 \\f+end

10) 7641 ---> 1467 \\reverse

Answer 1

boolean stillsearching = true;
int number = 1; //just to check
int numberOfDigits = 0;
int ourNumber = 4018; //or whatever
while (stillesearching){
if (numberOfDigits > 1000) break; //just to prove
// its not a endless loop
if (ourNumber/numer >= 1){
numberOfDigits ++;
number *= 10; //to get one digit higher
}else {
return numberOfDigits; // if its a function
stillsearching = false;
}
}