Question

Student Last Name First Name Date Problem 37. Develop the C++/CLI computer program with the Windows Forms interface. The program should display the N-th element of the given integer sequence and calculate average number of the first N elements of this sequence The user interface has to display three text-Boxes to input the integer number and to display the N-th element and the calculated average. The calculation sho uld start by clicking the button. The sequence is defined here by the first elements: 0, 1, 7, 18, 34, 55, 01 # include <io Sheen> uSi n nee i nt 5n en ter inh Vth elements

Answer 1

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NOTE :- olkj is the project name.

#pragma once

namespace olkj {

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>
/// Summary for Form1
/// </summary>
public ref class Form1 : public System::Windows::Forms::Form
{

public:
Form1(void)
{
InitializeComponent();

//
//TODO: Add the constructor code here
//
}

protected:
/// <summary>
/// Clean up any resources being used.
/// </summary>
~Form1()
{
if (components)
{
delete components;
}
}
private: System::Windows::Forms::TextBox^ textBox1;
protected:
private: System::Windows::Forms::TextBox^ textBox2;
private: System::Windows::Forms::Label^ label1;
private: System::Windows::Forms::Label^ label2;
private: System::Windows::Forms::Label^ label3;
private: System::Windows::Forms::TextBox^ textBox3;
private: System::Windows::Forms::Button^ button1;


private:
/// <summary>
/// Required designer variable.
/// </summary>
System::ComponentModel::Container ^components;

#pragma region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
void InitializeComponent(void)
{
this->textBox1 = (gcnew System::Windows::Forms::TextBox());
this->textBox2 = (gcnew System::Windows::Forms::TextBox());
this->label1 = (gcnew System::Windows::Forms::Label());
this->label2 = (gcnew System::Windows::Forms::Label());
this->label3 = (gcnew System::Windows::Forms::Label());
this->textBox3 = (gcnew System::Windows::Forms::TextBox());
this->button1 = (gcnew System::Windows::Forms::Button());
this->SuspendLayout();
//
// textBox1
//
this->textBox1->Location = System::Drawing::Point(142, 23);
this->textBox1->Name = L"textBox1";
this->textBox1->Size = System::Drawing::Size(100, 20);
this->textBox1->TabIndex = 0;
//
// textBox2
//
this->textBox2->Location = System::Drawing::Point(142, 117);
this->textBox2->Name = L"textBox2";
this->textBox2->Size = System::Drawing::Size(100, 20);
this->textBox2->TabIndex = 1;
this->textBox2->TextChanged += gcnew System::EventHandler(this, &Form1::textBox2_TextChanged);
//
// label1
//
this->label1->AutoSize = true;
this->label1->Location = System::Drawing::Point(33, 120);
this->label1->Name = L"label1";
this->label1->Size = System::Drawing::Size(64, 13);
this->label1->TabIndex = 2;
this->label1->Text = L"Nth element";
//
// label2
//
this->label2->AutoSize = true;
this->label2->Location = System::Drawing::Point(33, 167);
this->label2->Name = L"label2";
this->label2->Size = System::Drawing::Size(47, 13);
this->label2->TabIndex = 3;
this->label2->Text = L"Average";
//
// label3
//
this->label3->AutoSize = true;
this->label3->Location = System::Drawing::Point(33, 26);
this->label3->Name = L"label3";
this->label3->Size = System::Drawing::Size(43, 13);
this->label3->TabIndex = 4;
this->label3->Text = L"Enter N";
//
// textBox3
//
this->textBox3->Location = System::Drawing::Point(142, 160);
this->textBox3->Name = L"textBox3";
this->textBox3->Size = System::Drawing::Size(99, 20);
this->textBox3->TabIndex = 5;
//
// button1
//
this->button1->Location = System::Drawing::Point(89, 64);
this->button1->Name = L"button1";
this->button1->Size = System::Drawing::Size(75, 23);
this->button1->TabIndex = 6;
this->button1->Text = L"Calculate";
this->button1->UseVisualStyleBackColor = true;
this->button1->Click += gcnew System::EventHandler(this, &Form1::button1_Click);
//
// Form1
//
this->AutoScaleDimensions = System::Drawing::SizeF(6, 13);
this->AutoScaleMode = System::Windows::Forms::AutoScaleMode::Font;
this->ClientSize = System::Drawing::Size(284, 261);
this->Controls->Add(this->button1);
this->Controls->Add(this->textBox3);
this->Controls->Add(this->label3);
this->Controls->Add(this->label2);
this->Controls->Add(this->label1);
this->Controls->Add(this->textBox2);
this->Controls->Add(this->textBox1);
this->Name = L"Form1";
this->Text = L"Form1";
this->ResumeLayout(false);
this->PerformLayout();

}
#pragma endregion
private: System::Void textBox2_TextChanged(System::Object^ sender, System::EventArgs^ e) {
}
private: System::Void button1_Click(System::Object^ sender, System::EventArgs^ e) {

int c,avg = 0;
int a[200], j=0;

for(int i=0;i<200;i++)
{

j=((5*i*i)-3*i)/2;
a[i]=j;
}

c = Convert::ToInt32(textBox1->Text);
textBox2->Text = Convert::ToString(a[c-1]);

for(int i=0; i<c;i++)
{
avg = a[i]+avg;
}
avg = avg / c ;

textBox3->Text = Convert::ToString( avg);
}
};
}