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Lab1 600612168 #583

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6 changes: 6 additions & 0 deletions App.config
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<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<startup>
<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.6.1" />
</startup>
</configuration>
83 changes: 83 additions & 0 deletions CPE200Lab1.csproj
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<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
<Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
<PropertyGroup>
<Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
<Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
<ProjectGuid>{C2B44135-F1AC-48A9-BD70-3BE2C38C2A15}</ProjectGuid>
<OutputType>WinExe</OutputType>
<RootNamespace>CPE200Lab1</RootNamespace>
<AssemblyName>CPE200Lab1</AssemblyName>
<TargetFrameworkVersion>v4.6.1</TargetFrameworkVersion>
<FileAlignment>512</FileAlignment>
<AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
</PropertyGroup>
<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
<PlatformTarget>AnyCPU</PlatformTarget>
<DebugSymbols>true</DebugSymbols>
<DebugType>full</DebugType>
<Optimize>false</Optimize>
<OutputPath>bin\Debug\</OutputPath>
<DefineConstants>DEBUG;TRACE</DefineConstants>
<ErrorReport>prompt</ErrorReport>
<WarningLevel>4</WarningLevel>
</PropertyGroup>
<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
<PlatformTarget>AnyCPU</PlatformTarget>
<DebugType>pdbonly</DebugType>
<Optimize>true</Optimize>
<OutputPath>bin\Release\</OutputPath>
<DefineConstants>TRACE</DefineConstants>
<ErrorReport>prompt</ErrorReport>
<WarningLevel>4</WarningLevel>
</PropertyGroup>
<ItemGroup>
<Reference Include="System" />
<Reference Include="System.Core" />
<Reference Include="System.Xml.Linq" />
<Reference Include="System.Data.DataSetExtensions" />
<Reference Include="Microsoft.CSharp" />
<Reference Include="System.Data" />
<Reference Include="System.Deployment" />
<Reference Include="System.Drawing" />
<Reference Include="System.Net.Http" />
<Reference Include="System.Windows.Forms" />
<Reference Include="System.Xml" />
</ItemGroup>
<ItemGroup>
<Compile Include="CalculatorEngine.cs" />
<Compile Include="MainForm.cs">
<SubType>Form</SubType>
</Compile>
<Compile Include="MainForm.Designer.cs">
<DependentUpon>MainForm.cs</DependentUpon>
</Compile>
<Compile Include="Program.cs" />
<Compile Include="Properties\AssemblyInfo.cs" />
<EmbeddedResource Include="MainForm.resx">
<DependentUpon>MainForm.cs</DependentUpon>
</EmbeddedResource>
<EmbeddedResource Include="Properties\Resources.resx">
<Generator>ResXFileCodeGenerator</Generator>
<LastGenOutput>Resources.Designer.cs</LastGenOutput>
<SubType>Designer</SubType>
</EmbeddedResource>
<Compile Include="Properties\Resources.Designer.cs">
<AutoGen>True</AutoGen>
<DependentUpon>Resources.resx</DependentUpon>
</Compile>
<None Include="Properties\Settings.settings">
<Generator>SettingsSingleFileGenerator</Generator>
<LastGenOutput>Settings.Designer.cs</LastGenOutput>
</None>
<Compile Include="Properties\Settings.Designer.cs">
<AutoGen>True</AutoGen>
<DependentUpon>Settings.settings</DependentUpon>
<DesignTimeSharedInput>True</DesignTimeSharedInput>
</Compile>
</ItemGroup>
<ItemGroup>
<None Include="App.config" />
</ItemGroup>
<Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
</Project>
223 changes: 223 additions & 0 deletions CalculatorEngine.cs
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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace CPE200Lab1
{
class CalculatorEngine
{
private bool hasDot;
private bool isAllowBack;
private bool isAfterOperater;
private bool isAfterEqual;
private string firstOperand;
private string operate;



private string display = "0";

public string Display()
{
return display;
}



public string Calculator(string operate, string firstOperand, string secondOperand, int maxOutputSize = 8)
{
switch (operate)
{
case "+":
return (Convert.ToDouble(firstOperand) + Convert.ToDouble(secondOperand)).ToString();
case "-":
return (Convert.ToDouble(firstOperand) - Convert.ToDouble(secondOperand)).ToString();
case "X":
return (Convert.ToDouble(firstOperand) * Convert.ToDouble(secondOperand)).ToString();
case "÷":
// Not allow devide be zero
if (secondOperand != "0")
{
double result;
string[] parts;
int remainLength;

result = (Convert.ToDouble(firstOperand) / Convert.ToDouble(secondOperand));
// split between integer part and fractional part
parts = result.ToString().Split('.');
// if integer part length is already break max output, return error
if (parts[0].Length > maxOutputSize)
{
return "E";
}
// calculate remaining space for fractional part.
remainLength = maxOutputSize - parts[0].Length - 1;
// trim the fractional part gracefully. =
return result.ToString("N" + remainLength);
}
break;
case "%":
//your code here
break;
}
return "E";
}
public void resetAll()
{

display = "0";
isAllowBack = true;
hasDot = false;
isAfterOperater = false;
isAfterEqual = false;
}

public void Number(string h)
{


if (isAfterEqual)
{
resetAll();
}
if (isAfterOperater)
{
display = "0";
}
if (display.Length is 8)
{
return;
}
isAllowBack = true;
string digit = h;
if (display is "0")
{
display = "";
}
display += digit;
isAfterOperater = false;


}

public void handleOperater()
{
if (isAfterEqual)
{
resetAll();
}
if(display.Length is 8)
{
return;
}
if (display[0]is '-')
{
display = display.Substring(1, display.Length - 1);
}
else
{
display = "-" + display;
}




}
public void sum(string y)
{
if(display is "0")
{
display = "";
}
if (!isAfterOperater)
{
isAfterOperater = true;
isAfterEqual = false;
}
display += y;
isAllowBack = true;
}


public void Dot()
{
if (display is "Error")
{
return;
}
if (isAfterEqual)
{
resetAll();
}
if (display.Length is 8)
{
return;
}
if (!hasDot)
{
display += ".";
hasDot = true;
}
}

public void Sign()
{
if (display is "Error")
{
return;
}
if (isAfterEqual)
{
resetAll();
}
// already contain negative sign
if (display.Length is 8)
{
return;
}
if (display[0] is '-')
{
display = display.Substring(1, display.Length - 1);
}
else
{
display = "-" + display;
}
}

public void Back()
{
if (display is "Error")
{
return;
}
if (isAfterEqual)
{
return;
}
if (!isAllowBack)
{
return;
}
if (display != "0")
{
string current = display;
char rightMost = current[current.Length - 1];
if (rightMost is '.')
{
hasDot = false;
}
display = current.Substring(0, current.Length - 1);
if (display is "" || display is "-")
{
display = "0";
}
}
}


}

}
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