Introduction
In my previous article I explained about Sum of Two number without using addition operator and in this article I will describe how to subtract two number without using a subtraction operator. So let us understand the algorithms of it.
In C# "~" is called 1's complement operator; it works as described here.
We all know that "-num1=(~num1 +1)".
So:
~num1= -num - 1
sum=num + ~num1 +1
sum =num + (-num1 -1) +1
sum=num -num1 -1 +1
sum=num -num1
Use the following procedure to create it.
Step 1
First of all you must create a new Windows Store Application.
Open Visual Studio 2012
"File" -> "New" -> "Project..."
Choose "Template" -> "Visual C#" -> "Window Store app"
Choose "Blank App (XAML)" then rename the application
Step 2
Write the following XAML code in "Mainpage.Xaml" (that is available in Solution Explorer):
<Page
x:Class="subtract_app.MainPage"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="using:subtract_app"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d">
<Grid Background="Red">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="233*"/>
<ColumnDefinition Width="142*"/>
<ColumnDefinition Width="204*"/>
<ColumnDefinition Width="787*"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="78*"/>
<RowDefinition Height="49*"/>
<RowDefinition Height="43*"/>
<RowDefinition Height="40*"/>
<RowDefinition Height="38*"/>
<RowDefinition Height="520*"/>
</Grid.RowDefinitions>
<TextBlock Text="Subtract Two number without Using subtraction Operator" Foreground="White" FontSize="20" FontWeight="ExtraBold" Grid.Column="2" Grid.Row="1" Grid.ColumnSpan="2"></TextBlock>
<TextBlock Text="Enter Number1" Foreground="White" FontSize="15" FontWeight="ExtraBold" Grid.Column="1" Grid.Row="2"></TextBlock>
<TextBox x:Name="textbox1" Grid.Column="2" Grid.Row="2" Width="200" HorizontalAlignment="Left" VerticalAlignment="Top" Height="32" ></TextBox>
<TextBlock Text="Enter Number2" Foreground="White" FontSize="15" FontWeight="ExtraBold" Grid.Column="1" Grid.Row="3"></TextBlock>
<Button x:Name="button1" Content="Click" Click="Button1_Click" Grid.Column="2" Grid.Row="4" HorizontalAlignment="Left" VerticalAlignment="Top" Background="Yellow" Foreground="Black" Width="120" Height="38" />
<TextBox x:Name="textbox2" Grid.Column="2" Grid.Row="3" Width="200" HorizontalAlignment="Left" VerticalAlignment="Top" Height="32" ></TextBox>
<TextBlock x:Name="text1" Foreground="White" FontSize="15" FontWeight="ExtraBold" Grid.Column="3" Grid.Row="3" Width="200" HorizontalAlignment="Left" ></TextBlock>
</Grid>
</Page>
Step 3
Now write the following C# code for the button within "Mainpage.Xaml.cs".
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 subtract_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 num1 = 0, num2 = 0;
int sum = 0;
num1 = Convert.ToInt32(textbox1.Text);
num2 = Convert.ToInt32(textbox2.Text);
sum = num1 + ~num2 + 1;
text1.Text = sum.ToString();
}
}
}
Step 4
Run your app.