Лаба 5 (Экспонента) / MyForm

#pragma once

namespace Pr5 {

	using namespace System;
	using namespace System::ComponentModel;
	using namespace System::Collections;
	using namespace System::Windows::Forms;
	using namespace System::Data;
	using namespace System::Drawing;

	/// <summary>
	/// Сводка для MyForm
	/// </summary>
	public ref class MyForm : public System::Windows::Forms::Form
	{
	public:
		MyForm(void)
		{
			InitializeComponent();
			//
			//TODO: добавьте код конструктора
			//
		}

	protected:
		/// <summary>
		/// Освободить все используемые ресурсы.
		/// </summary>
		~MyForm()
		{
			if (components)
			{
				delete components;
			}
		}
	private: System::Windows::Forms::GroupBox^ groupBox1;
	protected:
	private: System::Windows::Forms::GroupBox^ groupBox2;
	private: System::Windows::Forms::RadioButton^ radioButton6;
	private: System::Windows::Forms::RadioButton^ radioButton5;
	private: System::Windows::Forms::RadioButton^ radioButton4;
	private: System::Windows::Forms::RadioButton^ radioButton3;
	private: System::Windows::Forms::RadioButton^ radioButton2;
	private: System::Windows::Forms::RadioButton^ radioButton1;
	private: System::Windows::Forms::TextBox^ textBox1;
	private: System::Windows::Forms::Button^ button1;
	private: System::Windows::Forms::Label^ label1;
	private: System::Windows::Forms::Label^ label2;
	private: System::Windows::Forms::Label^ label3;
	private: System::Windows::Forms::Label^ label4;
	private: System::Windows::Forms::Label^ label5;
	private: System::Windows::Forms::Label^ label6;
	private: System::Windows::Forms::Label^ label_x;
	private: System::Windows::Forms::Label^ label_eps;
	private: System::Windows::Forms::Label^ label_exp;
	private: System::Windows::Forms::Label^ label_n;
	private: System::Windows::Forms::Label^ label_exp_sum;






	private:
		/// <summary>
		/// Обязательная переменная конструктора.
		/// </summary>
		System::ComponentModel::Container ^components;

#pragma region Windows Form Designer generated code
		/// <summary>
		/// Требуемый метод для поддержки конструктора — не изменяйте 
		/// содержимое этого метода с помощью редактора кода.
		/// </summary>
		void InitializeComponent(void)
		{
			this->groupBox1 = (gcnew System::Windows::Forms::GroupBox());
			this->textBox1 = (gcnew System::Windows::Forms::TextBox());
			this->groupBox2 = (gcnew System::Windows::Forms::GroupBox());
			this->radioButton6 = (gcnew System::Windows::Forms::RadioButton());
			this->radioButton5 = (gcnew System::Windows::Forms::RadioButton());
			this->radioButton4 = (gcnew System::Windows::Forms::RadioButton());
			this->radioButton3 = (gcnew System::Windows::Forms::RadioButton());
			this->radioButton2 = (gcnew System::Windows::Forms::RadioButton());
			this->radioButton1 = (gcnew System::Windows::Forms::RadioButton());
			this->button1 = (gcnew System::Windows::Forms::Button());
			this->label1 = (gcnew System::Windows::Forms::Label());
			this->label2 = (gcnew System::Windows::Forms::Label());
			this->label3 = (gcnew System::Windows::Forms::Label());
			this->label4 = (gcnew System::Windows::Forms::Label());
			this->label5 = (gcnew System::Windows::Forms::Label());
			this->label6 = (gcnew System::Windows::Forms::Label());
			this->label_x = (gcnew System::Windows::Forms::Label());
			this->label_eps = (gcnew System::Windows::Forms::Label());
			this->label_exp = (gcnew System::Windows::Forms::Label());
			this->label_n = (gcnew System::Windows::Forms::Label());
			this->label_exp_sum = (gcnew System::Windows::Forms::Label());
			this->groupBox1->SuspendLayout();
			this->groupBox2->SuspendLayout();
			this->SuspendLayout();
			// 
			// groupBox1
			// 
			this->groupBox1->Controls->Add(this->textBox1);
			this->groupBox1->Location = System::Drawing::Point(12, 32);
			this->groupBox1->Name = L"groupBox1";
			this->groupBox1->Size = System::Drawing::Size(321, 57);
			this->groupBox1->TabIndex = 0;
			this->groupBox1->TabStop = false;
			this->groupBox1->Text = L"Ввод Х (-13<= x<=20)";
			// 
			// textBox1
			// 
			this->textBox1->Location = System::Drawing::Point(6, 21);
			this->textBox1->Name = L"textBox1";
			this->textBox1->Size = System::Drawing::Size(309, 22);
			this->textBox1->TabIndex = 0;
			this->textBox1->TextAlign = System::Windows::Forms::HorizontalAlignment::Right;
			this->textBox1->KeyPress += gcnew System::Windows::Forms::KeyPressEventHandler(this, &MyForm::textBox_KeyPress);
			// 
			// groupBox2
			// 
			this->groupBox2->Controls->Add(this->radioButton6);
			this->groupBox2->Controls->Add(this->radioButton5);
			this->groupBox2->Controls->Add(this->radioButton4);
			this->groupBox2->Controls->Add(this->radioButton3);
			this->groupBox2->Controls->Add(this->radioButton2);
			this->groupBox2->Controls->Add(this->radioButton1);
			this->groupBox2->Location = System::Drawing::Point(12, 95);
			this->groupBox2->Name = L"groupBox2";
			this->groupBox2->Size = System::Drawing::Size(321, 80);
			this->groupBox2->TabIndex = 1;
			this->groupBox2->TabStop = false;
			this->groupBox2->Text = L"Выбор точности";
			// 
			// radioButton6
			// 
			this->radioButton6->AutoSize = true;
			this->radioButton6->Location = System::Drawing::Point(171, 47);
			this->radioButton6->Name = L"radioButton6";
			this->radioButton6->Size = System::Drawing::Size(80, 20);
			this->radioButton6->TabIndex = 5;
			this->radioButton6->Text = L"0,000001";
			this->radioButton6->UseVisualStyleBackColor = true;
			this->radioButton6->CheckedChanged += gcnew System::EventHandler(this, &MyForm::radioButton_CheckedChanged);
			// 
			// radioButton5
			// 
			this->radioButton5->AutoSize = true;
			this->radioButton5->Location = System::Drawing::Point(171, 21);
			this->radioButton5->Name = L"radioButton5";
			this->radioButton5->Size = System::Drawing::Size(73, 20);
			this->radioButton5->TabIndex = 4;
			this->radioButton5->Text = L"0,00001";
			this->radioButton5->UseVisualStyleBackColor = true;
			this->radioButton5->CheckedChanged += gcnew System::EventHandler(this, &MyForm::radioButton_CheckedChanged);
			// 
			// radioButton4
			// 
			this->radioButton4->AutoSize = true;
			this->radioButton4->Location = System::Drawing::Point(80, 47);
			this->radioButton4->Name = L"radioButton4";
			this->radioButton4->Size = System::Drawing::Size(66, 20);
			this->radioButton4->TabIndex = 3;
			this->radioButton4->Text = L"0,0001";
			this->radioButton4->UseVisualStyleBackColor = true;
			this->radioButton4->CheckedChanged += gcnew System::EventHandler(this, &MyForm::radioButton_CheckedChanged);
			// 
			// radioButton3
			// 
			this->radioButton3->AutoSize = true;
			this->radioButton3->Location = System::Drawing::Point(80, 21);
			this->radioButton3->Name = L"radioButton3";
			this->radioButton3->Size = System::Drawing::Size(59, 20);
			this->radioButton3->TabIndex = 2;
			this->radioButton3->Text = L"0,001";
			this->radioButton3->UseVisualStyleBackColor = true;
			this->radioButton3->CheckedChanged += gcnew System::EventHandler(this, &MyForm::radioButton_CheckedChanged);
			// 
			// radioButton2
			// 
			this->radioButton2->AutoSize = true;
			this->radioButton2->Location = System::Drawing::Point(6, 47);
			this->radioButton2->Name = L"radioButton2";
			this->radioButton2->Size = System::Drawing::Size(52, 20);
			this->radioButton2->TabIndex = 1;
			this->radioButton2->Text = L"0,01";
			this->radioButton2->UseVisualStyleBackColor = true;
			this->radioButton2->CheckedChanged += gcnew System::EventHandler(this, &MyForm::radioButton_CheckedChanged);
			// 
			// radioButton1
			// 
			this->radioButton1->AutoSize = true;
			this->radioButton1->Checked = true;
			this->radioButton1->Location = System::Drawing::Point(6, 21);
			this->radioButton1->Name = L"radioButton1";
			this->radioButton1->Size = System::Drawing::Size(45, 20);
			this->radioButton1->TabIndex = 0;
			this->radioButton1->TabStop = true;
			this->radioButton1->Text = L"0,1";
			this->radioButton1->UseVisualStyleBackColor = true;
			this->radioButton1->CheckedChanged += gcnew System::EventHandler(this, &MyForm::radioButton_CheckedChanged);
			// 
			// button1
			// 
			this->button1->Location = System::Drawing::Point(12, 181);
			this->button1->Name = L"button1";
			this->button1->Size = System::Drawing::Size(321, 23);
			this->button1->TabIndex = 2;
			this->button1->Text = L"Рассчёт exp(x)";
			this->button1->UseVisualStyleBackColor = true;
			this->button1->Click += gcnew System::EventHandler(this, &MyForm::button1_Click);
			// 
			// label1
			// 
			this->label1->AutoSize = true;
			this->label1->Font = (gcnew System::Drawing::Font(L"Microsoft Sans Serif", 10, System::Drawing::FontStyle::Regular, System::Drawing::GraphicsUnit::Point,
				static_cast<System::Byte>(204)));
			this->label1->Location = System::Drawing::Point(67, 9);
			this->label1->Name = L"label1";
			this->label1->Size = System::Drawing::Size(221, 20);
			this->label1->TabIndex = 3;
			this->label1->Text = L"exp(x) = 1 + x/1 + x^2/2! + ...";
			this->label1->TextAlign = System::Drawing::ContentAlignment::TopCenter;
			// 
			// label2
			// 
			this->label2->AutoSize = true;
			this->label2->Location = System::Drawing::Point(9, 207);
			this->label2->Name = L"label2";
			this->label2->Size = System::Drawing::Size(144, 16);
			this->label2->TabIndex = 4;
			this->label2->Text = L"Исходное значение=";
			// 
			// label3
			// 
			this->label3->AutoSize = true;
			this->label3->Location = System::Drawing::Point(9, 232);
			this->label3->Name = L"label3";
			this->label3->Size = System::Drawing::Size(76, 16);
			this->label3->TabIndex = 5;
			this->label3->Text = L"Точность=";
			// 
			// label4
			// 
			this->label4->AutoSize = true;
			this->label4->Location = System::Drawing::Point(9, 257);
			this->label4->Name = L"label4";
			this->label4->Size = System::Drawing::Size(169, 16);
			this->label4->TabIndex = 6;
			this->label4->Text = L"Точное значение exp(x)=";
			// 
			// label5
			// 
			this->label5->AutoSize = true;
			this->label5->Location = System::Drawing::Point(9, 282);
			this->label5->Name = L"label5";
			this->label5->Size = System::Drawing::Size(132, 16);
			this->label5->TabIndex = 7;
			this->label5->Text = L"Число слагаемых = ";
			// 
			// label6
			// 
			this->label6->AutoSize = true;
			this->label6->Location = System::Drawing::Point(9, 307);
			this->label6->Name = L"label6";
			this->label6->Size = System::Drawing::Size(130, 16);
			this->label6->TabIndex = 8;
			this->label6->Text = L"Сумма ряда exp(x)=";
			// 
			// label_x
			// 
			this->label_x->AutoSize = true;
			this->label_x->Location = System::Drawing::Point(204, 207);
			this->label_x->Name = L"label_x";
			this->label_x->Size = System::Drawing::Size(82, 16);
			this->label_x->TabIndex = 9;
			this->label_x->Text = L"                         ";
			// 
			// label_eps
			// 
			this->label_eps->AutoSize = true;
			this->label_eps->Location = System::Drawing::Point(204, 232);
			this->label_eps->Name = L"label_eps";
			this->label_eps->Size = System::Drawing::Size(82, 16);
			this->label_eps->TabIndex = 10;
			this->label_eps->Text = L"                         ";
			// 
			// label_exp
			// 
			this->label_exp->AutoSize = true;
			this->label_exp->Location = System::Drawing::Point(204, 257);
			this->label_exp->Name = L"label_exp";
			this->label_exp->Size = System::Drawing::Size(82, 16);
			this->label_exp->TabIndex = 11;
			this->label_exp->Text = L"                         ";
			// 
			// label_n
			// 
			this->label_n->AutoSize = true;
			this->label_n->Location = System::Drawing::Point(204, 282);
			this->label_n->Name = L"label_n";
			this->label_n->Size = System::Drawing::Size(82, 16);
			this->label_n->TabIndex = 12;
			this->label_n->Text = L"                         ";
			// 
			// label_exp_sum
			// 
			this->label_exp_sum->AutoSize = true;
			this->label_exp_sum->Location = System::Drawing::Point(204, 307);
			this->label_exp_sum->Name = L"label_exp_sum";
			this->label_exp_sum->Size = System::Drawing::Size(82, 16);
			this->label_exp_sum->TabIndex = 13;
			this->label_exp_sum->Text = L"                         ";
			// 
			// MyForm
			// 
			this->AutoScaleDimensions = System::Drawing::SizeF(8, 16);
			this->AutoScaleMode = System::Windows::Forms::AutoScaleMode::Font;
			this->ClientSize = System::Drawing::Size(355, 331);
			this->Controls->Add(this->label_exp_sum);
			this->Controls->Add(this->label_n);
			this->Controls->Add(this->label_exp);
			this->Controls->Add(this->label_eps);
			this->Controls->Add(this->label_x);
			this->Controls->Add(this->label6);
			this->Controls->Add(this->label5);
			this->Controls->Add(this->label4);
			this->Controls->Add(this->label3);
			this->Controls->Add(this->label2);
			this->Controls->Add(this->label1);
			this->Controls->Add(this->button1);
			this->Controls->Add(this->groupBox2);
			this->Controls->Add(this->groupBox1);
			this->FormBorderStyle = System::Windows::Forms::FormBorderStyle::Fixed3D;
			this->MaximizeBox = false;
			this->Name = L"MyForm";
			this->Text = L"Экспонента";
			this->groupBox1->ResumeLayout(false);
			this->groupBox1->PerformLayout();
			this->groupBox2->ResumeLayout(false);
			this->groupBox2->PerformLayout();
			this->ResumeLayout(false);
			this->PerformLayout();

		}
#pragma endregion
double eps = 0.1;
private: System::Void reset()
{
	label_x->Text = "";
	label_n->Text = "";
	label_eps->Text = "";
	label_exp_sum->Text = "";
	label_exp->Text = "";
}
private: System::Void textBox_KeyPress(System::Object^ sender, System::Windows::Forms::KeyPressEventArgs^ e)
{
	reset();
	e->Handled = true;
	System::Windows::Forms::TextBox^ textbox = safe_cast <System::Windows::Forms::TextBox^> (sender);
	if ((e->KeyChar >= '0') && (e->KeyChar <= '9')								// ввод цифр
		|| e->KeyChar == 127													// delete
		|| e->KeyChar == 8														// backspace	
		|| ((e->KeyChar == '.' || e->KeyChar == ',') &&										// ввод . или ,
			(textbox->Text->IndexOf(L",") == -1 && textbox->Text->IndexOf(L".") == -1)))	// если в строке уже нет одной запІтой или точки
		e->Handled = false;
	else if (e->KeyChar == '-')
	{
		int selectionStart = textbox->SelectionStart;
		if (textbox->Text->IndexOf("-") != -1)
		{
			textbox->Text = textbox->Text->Replace("-", "");
			textbox->SelectionStart = selectionStart - 1;
			if (textbox->SelectionStart < 0)
				textbox->SelectionStart = 0;
		}
		else
		{
			textbox->Text = "-" + textbox->Text;
			textbox->SelectionStart = selectionStart + 1;
		}
	}
};
private: double getNumber(System::Windows::Forms::TextBox^ textbox)	// возвращает число из текстбокса, измен¤ет текстбокс, если в нЄм перед точкой нет чисел
{
	textbox->Text = textbox->Text->Replace(".", ",");
	if (textbox->Text == "" || textbox->Text == "," || textbox->Text == "-" || textbox->Text == "-,")
	{
		//textbox->Text = "0";
		textbox->Text = "";
		return 0;
	}
	if (textbox->Text->IndexOf(",") == 0)
		textbox->Text = textbox->Text->Replace(",", "0,");
	return Convert::ToDouble(textbox->Text);
}
private: System::Void radioButton_CheckedChanged(System::Object^ sender, System::EventArgs^ e)
{
	System::Windows::Forms::RadioButton^ radiobutton = safe_cast <System::Windows::Forms::RadioButton^> (sender);
	if (radiobutton->Checked)
	{
		eps = Convert::ToDouble(radiobutton->Text);
	}
}
private: System::Void button1_Click(System::Object^ sender, System::EventArgs^ e)
{
	double x = getNumber(textBox1);
	if (-13 > x || x > 20)
	{
		MessageBox::Show(this, "Число не входит в указанный диапозон (-13<=x<=20)", "Экспонента", MessageBoxButtons::OK, MessageBoxIcon::Exclamation);
		return;
	}
	if (textBox1->Text == "")
	{
		MessageBox::Show(this, "Введите число", "Экспонента", MessageBoxButtons::OK, MessageBoxIcon::Exclamation);
		return;
	}
	while (true)
	{
		double exp_ans = 0;
		double term = 1;
		double n = 0;
		while (Math::Abs(term) >= eps)
		{
			exp_ans += term;
			term = term * x / ++n;
		}
		exp_ans += term;
		n++;
		if (exp_ans < eps && !radioButton6->Checked)
			change_eps(eps * 0.1);
		else
		{
			label_x->Text = x.ToString();
			label_n->Text = n.ToString();
			label_eps->Text = eps.ToString("0.######");
			System::String^ accuracy = "f" + (label_eps->Text->Length - 1).ToString();

			label_exp_sum->Text = exp_ans.ToString(accuracy);
			label_exp->Text = Math::Exp(x).ToString(accuracy);
			return;
		}
	}
}
private: System::Void change_eps(double accuracy)
{
	int c = accuracy.ToString("0.######")->Length - 2;
	switch (c)
	{
		case 1:
			radioButton1->Checked = true;
			break;
		case 2:
			radioButton2->Checked = true;
			break;
		case 3:
			radioButton3->Checked = true;
			break;
		case 4:
			radioButton4->Checked = true;
			break;
		case 5:
			radioButton5->Checked = true;
			break;
		default:
			radioButton6->Checked = true;
			break;
	}
}
};
}