TYPESCRIPT

number of digits in c++

#include <iostream>
#include <math.h>
using namespace std;
int main(){
    unsigned long long n = 2345423454234542345 ; // the number n
    int  x = floor(log10(n)) + 1 ; // x = the digit count,
    cout << x << endl ; // the largest digit can be handled with 
  											// is unsigned long long 
    return 0;
}

how to find how many digits a number has in c++

#include <iostream>
#include <cmath>

unsigned int getNumberOfDigits (int i)
{
    return i > 0 ? log10((double) i) + 1 : 1;
}

int main()
{
	std::cout << "Number of digits: " << getNumberOfDigits(/*Example*/6738) << std::endl;  
	return 0;
}