Write a C++ program that prompts for an integer greater than one that represents

Question

Write a C++ program that prompts for an integer greater than one that represents the low end of a range and a second integer greater than or equal to the first integer that represents the high end of a range. The program will print the factors of integers in this range in descending order.

For example, if the user enters 2 for the low end of the range and 6 for the high end of the range, then the program will output:

6: 1, 2, 3, 6

5: 1, 5

4: 1, 2, 4

3: 1, 3

2: 1, 2

You should try testing your codes with the above sample output. Here is the code I have so far:

#include <iostream>
#include <cmath>
using namespace std;

int main()
{
   // Declare and initialize variables
   int min;            // Minimum integer
   int max;            // Maximum integer
   int i,j;           // Variables to use within loops

   // Repeatedly prompt for correct input minimum integer
   cout << "Enter min integer: ";
   cin >> min;
   while (min <= 1)
   {
   cout << "Number must be greater than 1." << endl;
   cout << "Enter min integer again: ";
   cin >> min;
   }

   // Repeatedly prompt for correct input maximum integer
   cout << "Enter max integer: ";
   cin >> max;
   while (max < min)
   {
   cout << "Number must be greater or equal to " << min << "." << endl;
   cout << "Enter max integer again: ";
   cin >> max;
   }
   cout << endl;

   // Display all factors
   for (i = max; i >= min; i--)
   {
       for (j = 0; j <= i; j++)
       {
           if (i % j == 0)
           {
           cout << i << endl;
           }
       }
   cout << "Factors of all numbers in the range: [ " << min << ", " << max << " ]" << endl;
   }           
  
   // End program
   return 0;
}

I am stuck on the step that create the factors. Please help. Thanks a lot!

Explanation / Answer

#include <iostream>
#include <cmath>
using namespace std;

int main()
{
    // Declare and initialize variables
    int min;             // Minimum integer
    int max;             // Maximum integer
    int i,j;            // Variables to use within loops

    // Repeatedly prompt for correct input minimum integer
    cout << "Enter min integer: ";
    cin >> min;
    while (min <= 1)
    {
    cout << "Number must be greater than 1." << endl;
    cout << "Enter min integer again: ";
    cin >> min;
    }

    // Repeatedly prompt for correct input maximum integer
    cout << "Enter max integer: ";
    cin >> max;
    while (max < min)
    {
    cout << "Number must be greater or equal to " << min << "." << endl;
    cout << "Enter max integer again: ";
    cin >> max;
    }
    cout << endl;

    // Display all factors
    cout << "Factors of all numbers in the range: [ " << min << ", " << max << " ]" << endl;

    for (i = max; i >= min; i--)
    {
      cout<<i<<": ";
        for (j = 1; j < i; j++)
        {
            if (i % j == 0)
              cout << j << ", ";
        }
        cout<<i<<endl;
    }           
  
    // End program
    return 0;
}

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