Count Digits in C++

 In this tutorial, I will show you how to write a program that will ask the user to give a series of numbers and then the program will count the digits in a given number using the C++ programming language.

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Program Listing

/* Count_Digits.cpp

   Jake Rodriguez Pomperada, MAED-IT, MIT

   www.jakerpomperada.com

   jakerpomperada@gmail.com

   Bacolod City, Negros Occidental, Philippines

*/

#include <iostream>

long long int a=0;

int main()

{

    int x=0;

    std::cout <<"\n\n";

    std::cout <<"\tCount Digits in C++";

    std::cout <<"\n\n";

    std::cout <<"\tGive a Number : ";

    std::cin >> a;

    std::cout <<"\n\n";

    for (x = 1; a >= 10; x++)

    {

        a = a / 10;

    }

    std::cout <<"\tThe Variable a contains " 

          <<  x << " digits.\n";

    std::cout <<"\n\n";

    std::cout <<"\tEnd of Program";

    std::cout <<"\n\n";

}