Tugas 2 | Pemrograman Berbasis Kerangka Kerja (A)

Kalkulator Sederhana Menggunakan Framework .NET

Pada kesempatan kali ini saya telah membuat kalkulator sederhana menggunakan framework .NET. Fitur yang dimiliki kalkulator ini sangatlah sederhana yakni menjumlah, mengurangi, membagi, dan mengalikan angka yang dimasukkan melalui menekan tombol yang ada. Berikut merupakan tampilan dari aplikasi kalkulator sederhana yang telah saya buat.

Source Code

File project dari aplikasi ini dapat diakses pada laman github yang saya miliki richodainino/simple-calculator (github.com). Adapula source code dari aplikasi kalkulator sederhana yang saya buat ini adalah sebagai berikut.

	using System;
	using System.Collections.Generic;
	using System.ComponentModel;
	using System.Data;
	using System.Drawing;
	using System.Linq;
	using System.Text;
	using System.Threading.Tasks;
	using System.Windows.Forms;
	namespace simple_calculator
	{
	public partial class Form1 : Form
	{
	string first = "";
	string second = "";
	char function;
	double result = 0.0;
	string userInput = "";
	bool firstInput = true;
	public Form1()
	{
	InitializeComponent();
	}
	private void num1_Click(object sender, EventArgs e)
	{
	calculatorDisplay.Text = "";
	userInput += "1";
	calculatorDisplay.Text += userInput;
	}
	private void num2_Click(object sender, EventArgs e)
	{
	calculatorDisplay.Text = "";
	userInput += "2";
	calculatorDisplay.Text += userInput;
	}
	private void num3_Click(object sender, EventArgs e)
	{
	calculatorDisplay.Text = "";
	userInput += "3";
	calculatorDisplay.Text += userInput;
	}
	private void num4_Click(object sender, EventArgs e)
	{
	calculatorDisplay.Text = "";
	userInput += "4";
	calculatorDisplay.Text += userInput;
	}
	private void num5_Click(object sender, EventArgs e)
	{
	calculatorDisplay.Text = "";
	userInput += "5";
	calculatorDisplay.Text += userInput;
	}
	private void num6_Click(object sender, EventArgs e)
	{
	calculatorDisplay.Text = "";
	userInput += "6";
	calculatorDisplay.Text += userInput;
	}
	private void num7_Click(object sender, EventArgs e)
	{
	calculatorDisplay.Text = "";
	userInput += "7";
	calculatorDisplay.Text += userInput;
	}
	private void num8_Click(object sender, EventArgs e)
	{
	calculatorDisplay.Text = "";
	userInput += "8";
	calculatorDisplay.Text += userInput;
	}
	private void num9_Click(object sender, EventArgs e)
	{
	calculatorDisplay.Text = "";
	userInput += "9";
	calculatorDisplay.Text += userInput;
	}
	private void num0_Click(object sender, EventArgs e)
	{
	calculatorDisplay.Text = "";
	userInput += "0";
	calculatorDisplay.Text += userInput;
	}
	private void clearButton_Click(object sender, EventArgs e)
	{
	first = "";
	second = "";
	userInput = "";
	result = 0.0;
	calculatorDisplay.Text = "0";
	firstInput = true;
	}
	private void divideButton_Click(object sender, EventArgs e)
	{
	function = '/';
	if (firstInput)
	{
	first = userInput;
	firstInput = false;
	}
	else
	{
	first = result.ToString();
	}
	userInput = "";
	}
	private void multiplyButton_Click(object sender, EventArgs e)
	{
	function = '*';
	if (firstInput)
	{
	first = userInput;
	firstInput = false;
	}
	else
	{
	first = result.ToString();
	}
	userInput = "";
	}
	private void plusButton_Click(object sender, EventArgs e)
	{
	function = '+';
	if (firstInput)
	{
	first = userInput;
	firstInput = false;
	}
	else
	{
	first = result.ToString();
	}
	userInput = "";
	}
	private void minusButton_Click(object sender, EventArgs e)
	{
	function = '-';
	if (firstInput)
	{
	first = userInput;
	firstInput = false;
	}
	else
	{
	first = result.ToString();
	}
	userInput = "";
	}
	private void equalButton_Click(object sender, EventArgs e)
	{
	if (firstInput)
	{
	result = userInput == "" ? 0.0 : Convert.ToDouble(userInput);
	calculatorDisplay.Text = result.ToString();
	return;
	}
	double firstNum, secondNum;
	second = userInput;
	firstNum = first != "" ? Convert.ToDouble(first) : result;
	secondNum = Convert.ToDouble(second);
	// Plus
	if (function == '+')
	{
	result = firstNum + secondNum;
	calculatorDisplay.Text = result.ToString();
	}
	// Minus
	else if (function == '-')
	{
	result = firstNum - secondNum;
	calculatorDisplay.Text = result.ToString();
	}
	// Divide
	else if (function == '/')
	{
	if (secondNum == 0.0)
	{
	calculatorDisplay.Text = "You can't";
	}
	else
	{
	result = firstNum / secondNum;
	calculatorDisplay.Text = result.ToString();
	}
	}
	// Multiply
	else if (function == '*')
	{
	result = firstNum * secondNum;
	calculatorDisplay.Text = result.ToString();
	}
	}
	private void decimalButton_Click(object sender, EventArgs e)
	{
	calculatorDisplay.Text += ".";
	}
	}
	}

view raw Form1.cs hosted with ❤ by GitHub

Referensi

• Create A Calculator App in C# | Visual Studio 2020 | Part 1 by Shaun Halverson
• Create A Calculator App in C# | Visual Studio 2020 | Part 2 by Shaun Halverson
• Create A Calculator App in C# | Visual Studio 2020 | Part 3 by Shaun Halverson