56: Write a program in C++ to display n terms of natural number and their sum. Go to the editor

// Write a program in C++ to display n terms of natural number and their sum. Go to the editor

// Sample Output:

// Input a number of terms: 7

// The natural numbers upto 7th terms are:

// 1 2 3 4 5 6 7

// The sum of the natural numbers is: 28

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

#include <iostream>

using namespace std;

int main()

{

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

    int numf, a = 0;

    cout << "Enter the number of terms: ";

    cin >> numf;

    cout << "The natural numbers upto " << numf << " terms are:" << endl;

    for (int i = 1; i <= numf; i++)

    {

        cout << i << " ";

    }

    for (int i = 1; i <= numf; i++)

    {

        a = a + i;

    }

    cout << "\nThe sum of natural numbers upto " << numf << " is: " << a << endl;

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

    int j = 1, k = 1, b = 0;

    cout << "The natural numbers upto " << numf << " term is:" << endl;

    while (j <= numf)

    {

        cout << j << ' ';

        j++;

    }

    while (k <= numf)

    {

        b = b + k;

        k++;

    }

    cout << "\nThe sum of natural numbers upto " << numf << " is: " << b << endl;

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

    int l = 1, m = 1, c = 0;

    cout << "The natural numbers upto " << numf << " term are:" << endl;

    do

    {

        cout << l << ' ';

        l++;

    } while (l <= numf);

    do

    {

        c = c + m;

        m++;

    } while (m <= numf);

    cout << "\nSum of natural numbers upto " << numf << " is: " << c << endl;

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

    return 0;

}