BCA and B.Sc Programs - Programming in C++ Lab - Bharathiar University - Practical Program 3 - Write a C++ Program to read an integer number and find the sum of all digits until it reduces to a single digit using constructor, destructor and inline member functions

 

Bharathiar University

Programming in C++ Lab

C++ Program 3

Write a C++ Program to read an integer number and find the sum of all digits until it reduces to a single digit using constructor, destructor and inline member functions

In this page

• C++ Source Code for Visual Studio Code
• C++ Source Code for MS Dos Turbo C++

FOR VISUAL STUDIO CODE

#include <iostream>

using namespace std;

class SumofDigits {

      

  public:

    long int n;

    SumofDigits()

    {

      n=0;

     

    }

    inline void getInteger() {

      cout << "Enter an Integer Number:";

      cin >> n;

    }

    int sum() 

    {

      int s = 0, r;

      while (n>0||s>9) {

if(n == 0)

        {

            n = s;

            s = 0;

        }

      r = n % 10;

          s = s + r;

          n = n / 10;

}

      return s;

  }

  ~SumofDigits()

  {

    cout<<"End of Program. Object Deleted";

  }

};

int main() {

  SumofDigits SD;

  int result;

   cout<<"Sum Of Digits"<<endl;

      cout<<"*************"<<endl;

  SD.getInteger();

  result = SD.sum();

  cout << "Sum of all digits of a number is " << result<<endl;

  return 0;

}

Output

Sum Of Digits

*************

Enter an Integer Number:12343

Sum of all digits of a number is 4

End of Program. Object Deleted

Turbo c++

#include <iostream.h>

#include<conio.h>

class SumofDigits {

   public:

    long int n;

    SumofDigits()

    {

n=0;

    }

    int sum();

    inline void getInteger() {

      cout << "Enter an Integer Number:";

      cin >> n;

    }

    ~SumofDigits()

  {

    cout<<"End of Program. Object Deleted";

  }

};

 int SumofDigits::sum()

    {

      int s = 0, r;

      while (n>0||s>9) {

if(n == 0)

        {

            n = s;

            s = 0;

        }

  r = n % 10;

  s = s + r;

  n = n / 10;

}

      return s;

  }

int main() {

  SumofDigits SD;

  int result;

  clrscr();

  cout<<"Sum Of Digits"<<endl;

cout<<"*************"<<endl;

  SD.getInteger();

  result = SD.sum();

  cout << "Sum of all digits of a number is " << result<<endl;

  getch();

  return 0;

}

OUTPUT