Code:
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
namespace Calculator
{
public class Calculator : System.Windows.Forms.Form
{
//globals
decimal result1 = 0;
decimal result2 = 0;
decimal result3 = 0;
string op = "";
private System.Windows.Forms.TextBox screen;
private System.Windows.Forms.Button button1;
private System.Windows.Forms.Button button2;
private System.Windows.Forms.Button butplus;
private System.Windows.Forms.Button butequals;
private System.Windows.Forms.Button butclear;
private System.Windows.Forms.Button button3;
private System.Windows.Forms.Button button4;
private System.Windows.Forms.Button button5;
private System.Windows.Forms.Button button6;
private System.Windows.Forms.Button button7;
private System.Windows.Forms.Button button8;
private System.Windows.Forms.Button button9;
private System.Windows.Forms.Button button0;
private System.Windows.Forms.Button butminus;
private System.Windows.Forms.Button butdivide;
private System.Windows.Forms.Button butmulti;
private System.Windows.Forms.Button butsigned;
private System.Windows.Forms.Button butdecimal;
private System.ComponentModel.Container components = null;
public Calculator()
{
InitializeComponent();
}
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
#region Windows Form Designer generated code
private void InitializeComponent()
{
System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(Calculator));
this.screen = new System.Windows.Forms.TextBox();
this.button1 = new System.Windows.Forms.Button();
this.button2 = new System.Windows.Forms.Button();
this.butplus = new System.Windows.Forms.Button();
this.butequals = new System.Windows.Forms.Button();
this.butclear = new System.Windows.Forms.Button();
this.button3 = new System.Windows.Forms.Button();
this.button4 = new System.Windows.Forms.Button();
this.button5 = new System.Windows.Forms.Button();
this.button6 = new System.Windows.Forms.Button();
this.button7 = new System.Windows.Forms.Button();
this.button8 = new System.Windows.Forms.Button();
this.button9 = new System.Windows.Forms.Button();
this.button0 = new System.Windows.Forms.Button();
this.butminus = new System.Windows.Forms.Button();
this.butdivide = new System.Windows.Forms.Button();
this.butmulti = new System.Windows.Forms.Button();
this.butsigned = new System.Windows.Forms.Button();
this.butdecimal = new System.Windows.Forms.Button();
this.SuspendLayout();
//
// screen
//
this.screen.BackColor = System.Drawing.SystemColors.HighlightText;
this.screen.Font = new System.Drawing.Font("Microsoft Sans Serif", 14.25F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.screen.Location = new System.Drawing.Point(24, 24);
this.screen.MaxLength = 30;
this.screen.Name = "screen";
this.screen.ReadOnly = true;
this.screen.RightToLeft = System.Windows.Forms.RightToLeft.Yes;
this.screen.Size = new System.Drawing.Size(312, 29);
this.screen.TabIndex = 0;
this.screen.Text = "0";
//
// button1
//
this.button1.BackColor = System.Drawing.Color.Black;
this.button1.Cursor = System.Windows.Forms.Cursors.Hand;
this.button1.Font = new System.Drawing.Font("Comic Sans MS", 15.75F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.button1.ForeColor = System.Drawing.SystemColors.ActiveCaptionText;
this.button1.Location = new System.Drawing.Point(196, 92);
this.button1.Name = "button1";
this.button1.Size = new System.Drawing.Size(32, 32);
this.button1.TabIndex = 1;
this.button1.Text = "1";
this.button1.Click += new System.EventHandler(this.button1_Click);
//
// button2
//
this.button2.BackColor = System.Drawing.Color.Black;
this.button2.Cursor = System.Windows.Forms.Cursors.Hand;
this.button2.Font = new System.Drawing.Font("Comic Sans MS", 15.75F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.button2.ForeColor = System.Drawing.SystemColors.ActiveCaptionText;
this.button2.Location = new System.Drawing.Point(232, 92);
this.button2.Name = "button2";
this.button2.Size = new System.Drawing.Size(32, 32);
this.button2.TabIndex = 2;
this.button2.Text = "2";
this.button2.Click += new System.EventHandler(this.button2_Click);
//
// butplus
//
this.butplus.BackColor = System.Drawing.Color.Black;
this.butplus.Cursor = System.Windows.Forms.Cursors.Hand;
this.butplus.Font = new System.Drawing.Font("Comic Sans MS", 20.25F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.butplus.ForeColor = System.Drawing.SystemColors.ActiveCaptionText;
this.butplus.Location = new System.Drawing.Point(304, 92);
this.butplus.Name = "butplus";
this.butplus.Size = new System.Drawing.Size(32, 32);
this.butplus.TabIndex = 3;
this.butplus.Text = "+";
this.butplus.Click += new System.EventHandler(this.butplus_Click);
//
// butequals
//
this.butequals.BackColor = System.Drawing.Color.Black;
this.butequals.Cursor = System.Windows.Forms.Cursors.Hand;
this.butequals.Font = new System.Drawing.Font("Comic Sans MS", 20.25F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.butequals.ForeColor = System.Drawing.SystemColors.ActiveCaptionText;
this.butequals.Location = new System.Drawing.Point(160, 92);
this.butequals.Name = "butequals";
this.butequals.Size = new System.Drawing.Size(32, 32);
this.butequals.TabIndex = 4;
this.butequals.Text = "=";
this.butequals.Click += new System.EventHandler(this.butequals_Click);
//
// butclear
//
this.butclear.BackColor = System.Drawing.Color.Brown;
this.butclear.Font = new System.Drawing.Font("Microsoft Sans Serif", 15.75F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.butclear.Location = new System.Drawing.Point(48, 84);
this.butclear.Name = "butclear";
this.butclear.Size = new System.Drawing.Size(75, 28);
this.butclear.TabIndex = 5;
this.butclear.Text = "Clear";
this.butclear.Click += new System.EventHandler(this.butclear_Click);
//
// button3
//
this.button3.BackColor = System.Drawing.Color.Black;
this.button3.Cursor = System.Windows.Forms.Cursors.Hand;
this.button3.Font = new System.Drawing.Font("Comic Sans MS", 15.75F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.button3.ForeColor = System.Drawing.SystemColors.ActiveCaptionText;
this.button3.Location = new System.Drawing.Point(268, 92);
this.button3.Name = "button3";
this.button3.Size = new System.Drawing.Size(32, 32);
this.button3.TabIndex = 6;
this.button3.Text = "3";
this.button3.Click += new System.EventHandler(this.button3_Click);
//
// button4
//
this.button4.BackColor = System.Drawing.Color.Black;
this.button4.Cursor = System.Windows.Forms.Cursors.Hand;
this.button4.Font = new System.Drawing.Font("Comic Sans MS", 15.75F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.button4.ForeColor = System.Drawing.SystemColors.ActiveCaptionText;
this.button4.Location = new System.Drawing.Point(196, 128);
this.button4.Name = "button4";
this.button4.Size = new System.Drawing.Size(32, 32);
this.button4.TabIndex = 7;
this.button4.Text = "4";
this.button4.Click += new System.EventHandler(this.button4_Click);
//
// button5
//
this.button5.BackColor = System.Drawing.Color.Black;
this.button5.Cursor = System.Windows.Forms.Cursors.Hand;
this.button5.Font = new System.Drawing.Font("Comic Sans MS", 15.75F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.button5.ForeColor = System.Drawing.SystemColors.ActiveCaptionText;
this.button5.Location = new System.Drawing.Point(232, 128);
this.button5.Name = "button5";
this.button5.Size = new System.Drawing.Size(32, 32);
this.button5.TabIndex = 8;
this.button5.Text = "5";
this.button5.Click += new System.EventHandler(this.button5_Click);
//
// button6
//
this.button6.BackColor = System.Drawing.Color.Black;
this.button6.Cursor = System.Windows.Forms.Cursors.Hand;
this.button6.Font = new System.Drawing.Font("Comic Sans MS", 15.75F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.button6.ForeColor = System.Drawing.SystemColors.ActiveCaptionText;
this.button6.Location = new System.Drawing.Point(268, 128);
this.button6.Name = "button6";
this.button6.Size = new System.Drawing.Size(32, 32);
this.button6.TabIndex = 9;
this.button6.Text = "6";
this.button6.Click += new System.EventHandler(this.button6_Click);
//
// button7
//
this.button7.BackColor = System.Drawing.Color.Black;
this.button7.Cursor = System.Windows.Forms.Cursors.Hand;
this.button7.Font = new System.Drawing.Font("Comic Sans MS", 15.75F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.button7.ForeColor = System.Drawing.SystemColors.ActiveCaptionText;
this.button7.Location = new System.Drawing.Point(196, 164);
this.button7.Name = "button7";
this.button7.Size = new System.Drawing.Size(32, 32);
this.button7.TabIndex = 10;
this.button7.Text = "7";
this.button7.Click += new System.EventHandler(this.button7_Click);
//
// button8
//
this.button8.BackColor = System.Drawing.Color.Black;
this.button8.Cursor = System.Windows.Forms.Cursors.Hand;
this.button8.Font = new System.Drawing.Font("Comic Sans MS", 15.75F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.button8.ForeColor = System.Drawing.SystemColors.ActiveCaptionText;
this.button8.Location = new System.Drawing.Point(232, 164);
this.button8.Name = "button8";
this.button8.Size = new System.Drawing.Size(32, 32);
this.button8.TabIndex = 11;
this.button8.Text = "8";
this.button8.Click += new System.EventHandler(this.button8_Click);
//
// button9
//
this.button9.BackColor = System.Drawing.Color.Black;
this.button9.Cursor = System.Windows.Forms.Cursors.Hand;
this.button9.Font = new System.Drawing.Font("Comic Sans MS", 15.75F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.button9.ForeColor = System.Drawing.SystemColors.ActiveCaptionText;
this.button9.Location = new System.Drawing.Point(268, 164);
this.button9.Name = "button9";
this.button9.Size = new System.Drawing.Size(32, 32);
this.button9.TabIndex = 12;
this.button9.Text = "9";
this.button9.Click += new System.EventHandler(this.button9_Click);
//
// button0
//
this.button0.BackColor = System.Drawing.Color.Black;
this.button0.Cursor = System.Windows.Forms.Cursors.Hand;
this.button0.Font = new System.Drawing.Font("Comic Sans MS", 15.75F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.button0.ForeColor = System.Drawing.SystemColors.ActiveCaptionText;
this.button0.Location = new System.Drawing.Point(196, 200);
this.button0.Name = "button0";
this.button0.Size = new System.Drawing.Size(32, 32);
this.button0.TabIndex = 13;
this.button0.Text = "0";
this.button0.Click += new System.EventHandler(this.button0_Click);
//
// butminus
//
this.butminus.BackColor = System.Drawing.Color.Black;
this.butminus.Cursor = System.Windows.Forms.Cursors.Hand;
this.butminus.Font = new System.Drawing.Font("Comic Sans MS", 20.25F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.butminus.ForeColor = System.Drawing.SystemColors.ActiveCaptionText;
this.butminus.Location = new System.Drawing.Point(304, 128);
this.butminus.Name = "butminus";
this.butminus.Size = new System.Drawing.Size(32, 32);
this.butminus.TabIndex = 14;
this.butminus.Text = "-";
this.butminus.Click += new System.EventHandler(this.butminus_Click);
//
// butdivide
//
this.butdivide.BackColor = System.Drawing.Color.Black;
this.butdivide.Cursor = System.Windows.Forms.Cursors.Hand;
this.butdivide.Font = new System.Drawing.Font("Comic Sans MS", 15.75F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.butdivide.ForeColor = System.Drawing.SystemColors.ActiveCaptionText;
this.butdivide.Location = new System.Drawing.Point(304, 164);
this.butdivide.Name = "butdivide";
this.butdivide.Size = new System.Drawing.Size(32, 32);
this.butdivide.TabIndex = 15;
this.butdivide.Text = "/";
this.butdivide.Click += new System.EventHandler(this.butdivide_Click);
//
// butmulti
//
this.butmulti.BackColor = System.Drawing.Color.Black;
this.butmulti.Cursor = System.Windows.Forms.Cursors.Hand;
this.butmulti.Font = new System.Drawing.Font("Comic Sans MS", 15.75F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.butmulti.ForeColor = System.Drawing.SystemColors.ActiveCaptionText;
this.butmulti.Location = new System.Drawing.Point(304, 200);
this.butmulti.Name = "butmulti";
this.butmulti.Size = new System.Drawing.Size(32, 32);
this.butmulti.TabIndex = 16;
this.butmulti.Text = "x";
this.butmulti.Click += new System.EventHandler(this.butmulti_Click);
//
// butsigned
//
this.butsigned.BackColor = System.Drawing.Color.Black;
this.butsigned.Cursor = System.Windows.Forms.Cursors.Hand;
this.butsigned.Font = new System.Drawing.Font("Comic Sans MS", 8.25F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.butsigned.ForeColor = System.Drawing.SystemColors.ActiveCaptionText;
this.butsigned.Location = new System.Drawing.Point(268, 200);
this.butsigned.Name = "butsigned";
this.butsigned.Size = new System.Drawing.Size(32, 32);
this.butsigned.TabIndex = 17;
this.butsigned.Text = "+/-";
this.butsigned.Click += new System.EventHandler(this.butsigned_Click);
//
// butdecimal
//
this.butdecimal.BackColor = System.Drawing.Color.Black;
this.butdecimal.Cursor = System.Windows.Forms.Cursors.Hand;
this.butdecimal.Font = new System.Drawing.Font("Comic Sans MS", 15.75F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.butdecimal.ForeColor = System.Drawing.SystemColors.ActiveCaptionText;
this.butdecimal.Location = new System.Drawing.Point(232, 200);
this.butdecimal.Name = "butdecimal";
this.butdecimal.Size = new System.Drawing.Size(32, 32);
this.butdecimal.TabIndex = 18;
this.butdecimal.Text = ".";
this.butdecimal.Click += new System.EventHandler(this.butdecimal_Click);
//
// Calculator
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.BackColor = System.Drawing.Color.Silver;
this.ClientSize = new System.Drawing.Size(360, 406);
this.Controls.Add(this.butdecimal);
this.Controls.Add(this.butsigned);
this.Controls.Add(this.butmulti);
this.Controls.Add(this.butdivide);
this.Controls.Add(this.butminus);
this.Controls.Add(this.button0);
this.Controls.Add(this.button9);
this.Controls.Add(this.button8);
this.Controls.Add(this.button7);
this.Controls.Add(this.button6);
this.Controls.Add(this.button5);
this.Controls.Add(this.button4);
this.Controls.Add(this.button3);
this.Controls.Add(this.butclear);
this.Controls.Add(this.butequals);
this.Controls.Add(this.butplus);
this.Controls.Add(this.button2);
this.Controls.Add(this.button1);
this.Controls.Add(this.screen);
this.Icon = ((System.Drawing.Icon)(resources.GetObject("$this.Icon")));
this.Name = "Calculator";
this.Text = "The Bruce Calculator";
this.ResumeLayout(false);
}
#endregion
[STAThread]
static void Main()
{
Application.Run(new Calculator());
}
private void button1_Click(object sender, System.EventArgs e)
{
if(screen.Text == "0")
{
this.screen.Text = "1";
}
else
{
screen.AppendText("1");
}
}
private void button2_Click(object sender, System.EventArgs e)
{
if(screen.Text == "0")
{
this.screen.Text = "2";
}
else
{
screen.AppendText("2");
}
}
private void button3_Click(object sender, System.EventArgs e)
{
}
private void button4_Click(object sender, System.EventArgs e)
{
}
private void button5_Click(object sender, System.EventArgs e)
{
if(screen.Text == "0")
{
this.screen.Text = "5";
}
else
{
screen.AppendText("5");
}
}
private void button6_Click(object sender, System.EventArgs e)
{
}
private void button7_Click(object sender, System.EventArgs e)
{
}
private void button8_Click(object sender, System.EventArgs e)
{
}
private void button9_Click(object sender, System.EventArgs e)
{
}
private void button0_Click(object sender, System.EventArgs e)
{
}
private void butclear_Click(object sender, System.EventArgs e)
{
screen.Text = "0";
result1 = 0;
result2 = 0;
result3 = 0;
}
private void butplus_Click(object sender, System.EventArgs e)
{
op = "+";
if(result1 == 0)
{
result1 = decimal.Parse(screen.Text);
screen.Text = "";
}
else
{
result1 = result1 + decimal.Parse(screen.Text);
screen.Text = "";
}
}
private void butequals_Click(object sender, System.EventArgs e)
{
result2 = decimal.Parse(screen.Text);
switch(op)
{
case "+":
arithmetic temp = new arithmetic();
result3 = temp.add(result1, result2);
result1 = result3;
screen.Text = result1.ToString();
result3 = 0;
break;
case "-":
arithmetic temp1 = new arithmetic();
result3 = temp1.minus(result1, result2);
result1 = result3;
screen.Text = result1.ToString();
result3 = 0;
break;
case "/":
arithmetic temp2 = new arithmetic();
result3 = temp2.divide(result1, result2);
result1 = result3;
screen.Text = result1.ToString();
result3 = 0;
break;
case "*":
arithmetic temp3 = new arithmetic();
result3 = temp3.multi(result1, result2);
result1 = result3;
screen.Text = result1.ToString();
result3 = 0;
break;
}
}
private void butminus_Click(object sender, System.EventArgs e)
{
op = "-";
if(result1 == 0)
{
result1 = decimal.Parse(screen.Text);
screen.Text = "";
}
else
{
result1 = result1 - decimal.Parse(screen.Text);
screen.Text = "";
}
}
private void butdivide_Click(object sender, System.EventArgs e)
{
op = "/";
if(result1 == 0)
{
result1 = decimal.Parse(screen.Text);
screen.Text = "";
}
else
{
result1 = result1 / decimal.Parse(screen.Text);
screen.Text = "";
}
}
private void butmulti_Click(object sender, System.EventArgs e)
{
op = "*";
if(result1 == 0)
{
result1 = decimal.Parse(screen.Text);
screen.Text = "";
}
else
{
result1 = result1 * decimal.Parse(screen.Text);
screen.Text = "";
}
}
private void butdecimal_Click(object sender, System.EventArgs e)
{
}
private void butsigned_Click(object sender, System.EventArgs e)
{
}
}
}
///////////////class in another file
using System;
namespace Calculator
{
public class arithmetic
{
public arithmetic()
{
//
// TODO: Add constructor logic here
//
}
public decimal add(decimal a, decimal b)
{
return a + b;
}
public decimal minus(decimal a, decimal b)
{
return a - b;
}
public decimal divide(decimal a, decimal b)
{
return a / b;
}
public decimal multi(decimal a, decimal b)
{
return a * b;
}
}
}
Thanks heaps for any help with this,
