Question

In C# Please Write an application named Perfect that displays every perfect number from 1 through 10,000. A number is perfect if it equals the sum of all the smaller positive integers that divide evenly into it. For example, 6 is perfect because 1, 2, and 3 divide evenly into it and their sum is 6.

Starting code.

using static System.Console;
class Perfect
{
static void Main()
{
// Write your main here.
}
}

Answer 1

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Perfect
{
class Program
{
static void Main(string[] args)
{
int n, i, sum;
int mn, mx;

Console.Write("\n\n");
Console.Write("Find perfect numbers within a given number of range:\n");
Console.Write("------------------------------------------------------");
Console.Write("\n\n");

Console.Write("Starting number : ");
mn = Convert.ToInt32(Console.ReadLine());
Console.Write("Ending number : ");
mx = Convert.ToInt32(Console.ReadLine());
Console.Write("The Perfect numbers in range : ");
for (n = mn; n <= mx; n++)
{
i = 1;
sum = 0;
while (i < n)
{
if (n % i == 0)
sum = sum + i;
i++;
}
if (sum == n)
Console.Write("{0} ", n);
}
Console.Write("\n");
Console.ReadLine();
}   
}
}

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