C++ Exercises: Find Harshad Number between 1 to 100

C++ Numbers: Exercise-21 with Solution

Write a C++ program to find the Harshad numbers between 1 and 100.

Sample Solution:

C++ Code :

#include<bits/stdc++.h> // Include necessary libraries
using namespace std; // Use the standard namespace

// Function to check if a number is a Harshad Number
bool chkHarshad(int n)
{
    int s = 0; // Initialize a variable to store the sum of digits
    int tmp; // Temporary variable to hold the number during the loop iterations

    // Loop to calculate the sum of digits of the number
    for (tmp = n; tmp > 0; tmp /= 10)
        s += tmp % 10; // Extract the last digit of the number and add it to the sum

    return (n % s == 0); // Return true if the number is divisible by the sum of its digits (Harshad Number condition)
}

// Main function
int main()
{
    int i; // Variable for loop iteration

    cout << "\n\n Find Harshad Numbers between 1 to 100: \n"; // Display a message about the program
    cout << " ---------------------------------------------------\n";
    cout << " The Harshad Numbers are: " << endl; // Display a message

    // Loop through numbers from 1 to 100 to find Harshad Numbers
    for (i = 1; i <= 100; i++)
    {
        if (chkHarshad(i)) // Check if the number is a Harshad Number using the chkHarshad function
            cout << i << " "; // Display the number if it is a Harshad Number
    }

    cout << endl; // Move to the next line

    return 0; // Return 0 to indicate successful execution
}

Sample Output:

 Find Harshad Numbers between 1 to 100:                                                              
 ---------------------------------------------------                                                 
 The Harshad Numbers are:                                                                            
1 2 3 4 5 6 7 8 9 10 12 18 20 21 24 27 30 36 40 42 45 48 50 54 60 63 70 72 80 81 84 90 100

Flowchart:

C++ Code Editor:

Contribute your code and comments through Disqus.

Previous: Write a program in C++ to check if a number is Harshad Number or not.
Next: Write a program in C++ to check whether a number is a Pronic Number or Heteromecic Number or not.