67: Write a program in C++ to find the sum of digits of a given number

 

// Write a program in C++ to find the sum of digits of a given number. Go to the editor

//     Sample Output:

//     Input a number: 1234

//     The sum of digits of 1234 is: 10

//     **************************************************************************************************

#include <iostream>

using namespace std;

int main()

{

    int num;

    cout << "\nInput a number: ";

    cin >> num;

    int num_for = num, num_while = num;

    cout << "\n********************************************************\n\n";

    int sum_for, rem_for;

    for (sum_for = 0; num_for > 0; num_for = num_for / 10)

    {

        rem_for = num_for % 10;

        sum_for = sum_for + rem_for;

    }

    cout << "The sum of digits of " << num << " is: " << sum_for << endl;

    cout << "\n********************************************************\n\n";

   

    int sum_while = 0, rem_while;

    while (num_while > 0)

    {

        rem_while = num_while % 10;

        sum_while = sum_while + rem_while;

        num_while = num_while / 10;

    }

    cout << "The sum of digits of " << num << " is: " << sum_while << endl;

    cout << "\n********************************************************\n\n";

   

    return 0;

}