In this article I describe how to determine if a number is a Perfect Number. But first let us understand what a Perfect Number is.
Perfect Number
A number is called a Perfect Number when the sum of its perfect divisors (except itself) are equal to a given number. In other words, a Perfect Number is a number that equals the sum of its factors.
Example: Number 6 = 1+2+3.
Use the following procedure to create a Perfect Number app in Windows Store.
Step 1
First of all you have to create a New Window Store Application.
- Open Visual Studio 2012
- "File" -> "New" -> "Project..."
- Choose Template: "Visual C#" -> "Window Store app"
- "Blank App (XAML)", then rename the application
Step 2
Write XAML code for "Mainpage.Xaml" that is available in Solution Explorer; see:
<Page
x:Class="armstrong_app.MainPage"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="using:armstrong_app"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d">
<Grid Background="Blue">
<Grid.RowDefinitions>
<RowDefinition Height="38*"/>
<RowDefinition Height="23*"/>
<RowDefinition Height="31*"/>
<RowDefinition Height="32*"/>
<RowDefinition Height="35*"/>
<RowDefinition Height="609*"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="161*"/>
<ColumnDefinition Width="303*"/>
<ColumnDefinition Width="902*"/>
</Grid.ColumnDefinitions>
<TextBlock Text="Check Number is Perfect Number or not" FontFamily="Arial" FontSize="14" FontWeight="ExtraBold" Foreground="Red" Grid.Column="1" Grid.Row="1" Grid.ColumnSpan="2"></TextBlock>
<TextBlock Text="Enter Number:" FontFamily="Arial" FontSize="15" FontWeight="ExtraBold" Foreground="Red" Grid.Column="1" Grid.Row="2"></TextBlock>
<TextBox x:Name="Textbox1" Width="150" Height="32" VerticalAlignment="Top" Grid.Column="2" Grid.Row="2" HorizontalAlignment="Left" Grid.RowSpan="2" />
<TextBlock Text="Number is:" FontFamily="Arial" FontSize="15" FontWeight="ExtraBold" Foreground="Red" Grid.Column="1" Grid.Row="3"></TextBlock>
<TextBlock x:Name="text2" FontFamily="Arial" FontSize="15" FontWeight="ExtraBold" Foreground="Red" Grid.Column="2" Grid.Row="3"></TextBlock>
<Button x:Name="button1" Content="Click" Grid.Row="3" Grid.Column="2" Background="Yellow" Foreground="Red" Width="103" Height="34" FontSize="15" Margin="0,31,0,2" Grid.RowSpan="2" Click="button1_Click"/>
</Grid>
</Page>
Step 3
Now write C# code for the button within "Mainpage.Xaml.cs"; see:
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using Windows.Foundation;
using Windows.Foundation.Collections;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Controls.Primitives;
using Windows.UI.Xaml.Data;
using Windows.UI.Xaml.Input;
using Windows.UI.Xaml.Media;
using Windows.UI.Xaml.Navigation;
namespace Perfect_app
{
public sealed partial class MainPage : Page
{
public MainPage()
{
this.InitializeComponent();
}
protected override void OnNavigatedTo(NavigationEventArgs e)
{
}
private void button1_Click(object sender, RoutedEventArgs e)
{
int num = Convert.ToInt32(Textbox1.Text);
int sum = 0;
for (int i = 1; i < num; i++)
{
if (num % i == 0)
{
sum = sum + i;
}
}
if (sum == num)
{
text2.Text = "Perfect Number";
}
else
{
text2.Text = "Not Perfect number";
}
}
}
}
Step 4
Run your App.
Step 5
Enter a number into the TextBox for determine if it is a Perfect Number.