계산기, 닷넷 C# 윈폼기반의 계산기를 작성하세요

 계산기, 닷넷 C# 윈폼기반의 계산기를 작성하세요

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1. 디자인 코드

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namespace Calc
{
    partial class Form1
    {
        /// <summary>
        /// Required designer variable.
        /// </summary>
        private System.ComponentModel.IContainer components = null;

        /// <summary>
        /// Clean up any resources being used.
        /// </summary>
        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
        protected override void Dispose(bool disposing)
        {
            if (disposing && (components != null))
            {
                components.Dispose();
            }
            base.Dispose(disposing);
        }

        #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>
        private void InitializeComponent()
        {
            this.textBox1 = new System.Windows.Forms.TextBox();
            this.btnC = new System.Windows.Forms.Button();
            this.btnCE = new System.Windows.Forms.Button();
            this.btnback = new System.Windows.Forms.Button();
            this.btnminus = new System.Windows.Forms.Button();
            this.btnplus = new System.Windows.Forms.Button();
            this.btnthree = new System.Windows.Forms.Button();
            this.btntwo = new System.Windows.Forms.Button();
            this.btnone = new System.Windows.Forms.Button();
            this.btndivide = new System.Windows.Forms.Button();
            this.btnnine = new System.Windows.Forms.Button();
            this.btneight = new System.Windows.Forms.Button();
            this.btnseven = new System.Windows.Forms.Button();
            this.btnmultiply = new System.Windows.Forms.Button();
            this.btnsix = new System.Windows.Forms.Button();
            this.btfive = new System.Windows.Forms.Button();
            this.btnfour = new System.Windows.Forms.Button();
            this.btnzero = new System.Windows.Forms.Button();
            this.btnequal = new System.Windows.Forms.Button();
            this.btnperiod = new System.Windows.Forms.Button();
            this.btnroot = new System.Windows.Forms.Button();
            this.SuspendLayout();
            //
            // textBox1
            //
            this.textBox1.Location = new System.Drawing.Point(26, 17);
            this.textBox1.Name = "textBox1";
            this.textBox1.Size = new System.Drawing.Size(286, 21);
            this.textBox1.TabIndex = 0;
            //
            // btnC
            //
            this.btnC.Location = new System.Drawing.Point(28, 62);
            this.btnC.Name = "btnC";
            this.btnC.Size = new System.Drawing.Size(57, 37);
            this.btnC.TabIndex = 1;
            this.btnC.Text = "C";
            this.btnC.UseVisualStyleBackColor = true;
            this.btnC.Click += new System.EventHandler(this.btnC_Click_1);
            //
            // btnCE
            //
            this.btnCE.Location = new System.Drawing.Point(104, 62);
            this.btnCE.Name = "btnCE";
            this.btnCE.Size = new System.Drawing.Size(57, 37);
            this.btnCE.TabIndex = 2;
            this.btnCE.Text = "CE";
            this.btnCE.UseVisualStyleBackColor = true;
            this.btnCE.Click += new System.EventHandler(this.btnCE_Click);
            //
            // btnback
            //
            this.btnback.Location = new System.Drawing.Point(178, 62);
            this.btnback.Name = "btnback";
            this.btnback.Size = new System.Drawing.Size(57, 37);
            this.btnback.TabIndex = 3;
            this.btnback.Text = "<--";
            this.btnback.UseVisualStyleBackColor = true;
            this.btnback.Click += new System.EventHandler(this.btnback_Click);
            //
            // btnminus
            //
            this.btnminus.Location = new System.Drawing.Point(257, 62);
            this.btnminus.Name = "btnminus";
            this.btnminus.Size = new System.Drawing.Size(57, 37);
            this.btnminus.TabIndex = 4;
            this.btnminus.Text = "-";
            this.btnminus.UseVisualStyleBackColor = true;
            this.btnminus.Click += new System.EventHandler(this.btnminus_Click);
            //
            // btnplus
            //
            this.btnplus.Location = new System.Drawing.Point(257, 115);
            this.btnplus.Name = "btnplus";
            this.btnplus.Size = new System.Drawing.Size(57, 37);
            this.btnplus.TabIndex = 8;
            this.btnplus.Text = "+";
            this.btnplus.UseVisualStyleBackColor = true;
            this.btnplus.Click += new System.EventHandler(this.btnplus_Click);
            //
            // btnthree
            //
            this.btnthree.Location = new System.Drawing.Point(178, 115);
            this.btnthree.Name = "btnthree";
            this.btnthree.Size = new System.Drawing.Size(57, 37);
            this.btnthree.TabIndex = 7;
            this.btnthree.Text = "3";
            this.btnthree.UseVisualStyleBackColor = true;
            this.btnthree.Click += new System.EventHandler(this.btnthree_Click);
            //
            // btntwo
            //
            this.btntwo.Location = new System.Drawing.Point(104, 115);
            this.btntwo.Name = "btntwo";
            this.btntwo.Size = new System.Drawing.Size(57, 37);
            this.btntwo.TabIndex = 6;
            this.btntwo.Text = "2";
            this.btntwo.UseVisualStyleBackColor = true;
            this.btntwo.Click += new System.EventHandler(this.bttntwo_Click);
            //
            // btnone
            //
            this.btnone.Location = new System.Drawing.Point(28, 115);
            this.btnone.Name = "btnone";
            this.btnone.Size = new System.Drawing.Size(57, 37);
            this.btnone.TabIndex = 5;
            this.btnone.Text = "1";
            this.btnone.UseVisualStyleBackColor = true;
            this.btnone.Click += new System.EventHandler(this.btnone_Click);
            //
            // btndivide
            //
            this.btndivide.Location = new System.Drawing.Point(257, 218);
            this.btndivide.Name = "btndivide";
            this.btndivide.Size = new System.Drawing.Size(57, 37);
            this.btndivide.TabIndex = 16;
            this.btndivide.Text = "/";
            this.btndivide.UseVisualStyleBackColor = true;
            this.btndivide.Click += new System.EventHandler(this.btndivide_Click);
            //
            // btnnine
            //
            this.btnnine.Location = new System.Drawing.Point(178, 218);
            this.btnnine.Name = "btnnine";
            this.btnnine.Size = new System.Drawing.Size(57, 37);
            this.btnnine.TabIndex = 15;
            this.btnnine.Text = "9";
            this.btnnine.UseVisualStyleBackColor = true;
            this.btnnine.Click += new System.EventHandler(this.btnnine_Click);
            //
            // btneight
            //
            this.btneight.Location = new System.Drawing.Point(104, 218);
            this.btneight.Name = "btneight";
            this.btneight.Size = new System.Drawing.Size(57, 37);
            this.btneight.TabIndex = 14;
            this.btneight.Text = "8";
            this.btneight.UseVisualStyleBackColor = true;
            this.btneight.Click += new System.EventHandler(this.btneight_Click);
            //
            // btnseven
            //
            this.btnseven.Location = new System.Drawing.Point(28, 218);
            this.btnseven.Name = "btnseven";
            this.btnseven.Size = new System.Drawing.Size(57, 37);
            this.btnseven.TabIndex = 13;
            this.btnseven.Text = "7";
            this.btnseven.UseVisualStyleBackColor = true;
            this.btnseven.Click += new System.EventHandler(this.btnseven_Click);
            //
            // btnmultiply
            //
            this.btnmultiply.Location = new System.Drawing.Point(257, 165);
            this.btnmultiply.Name = "btnmultiply";
            this.btnmultiply.Size = new System.Drawing.Size(57, 37);
            this.btnmultiply.TabIndex = 12;
            this.btnmultiply.Text = "*";
            this.btnmultiply.UseVisualStyleBackColor = true;
            this.btnmultiply.Click += new System.EventHandler(this.btnmultiply_Click);
            //
            // btnsix
            //
            this.btnsix.Location = new System.Drawing.Point(178, 165);
            this.btnsix.Name = "btnsix";
            this.btnsix.Size = new System.Drawing.Size(57, 37);
            this.btnsix.TabIndex = 11;
            this.btnsix.Text = "6";
            this.btnsix.UseVisualStyleBackColor = true;
            this.btnsix.Click += new System.EventHandler(this.btnsix_Click);
            //
            // btfive
            //
            this.btfive.Location = new System.Drawing.Point(104, 165);
            this.btfive.Name = "btfive";
            this.btfive.Size = new System.Drawing.Size(57, 37);
            this.btfive.TabIndex = 10;
            this.btfive.Text = "5";
            this.btfive.UseVisualStyleBackColor = true;
            this.btfive.Click += new System.EventHandler(this.btnfive_Click);
            //
            // btnfour
            //
            this.btnfour.Location = new System.Drawing.Point(28, 165);
            this.btnfour.Name = "btnfour";
            this.btnfour.Size = new System.Drawing.Size(57, 37);
            this.btnfour.TabIndex = 9;
            this.btnfour.Text = "4";
            this.btnfour.UseVisualStyleBackColor = true;
            this.btnfour.Click += new System.EventHandler(this.btnfour_Click);
            //
            // btnzero
            //
            this.btnzero.Location = new System.Drawing.Point(28, 271);
            this.btnzero.Name = "btnzero";
            this.btnzero.Size = new System.Drawing.Size(57, 37);
            this.btnzero.TabIndex = 17;
            this.btnzero.Text = "0";
            this.btnzero.UseVisualStyleBackColor = true;
            this.btnzero.Click += new System.EventHandler(this.btnzero_Click);
            //
            // btnequal
            //
            this.btnequal.Location = new System.Drawing.Point(178, 271);
            this.btnequal.Name = "btnequal";
            this.btnequal.Size = new System.Drawing.Size(57, 37);
            this.btnequal.TabIndex = 19;
            this.btnequal.Text = "=";
            this.btnequal.UseVisualStyleBackColor = true;
            this.btnequal.Click += new System.EventHandler(this.btnequal_Click);
            //
            // btnperiod
            //
            this.btnperiod.Location = new System.Drawing.Point(104, 271);
            this.btnperiod.Name = "btnperiod";
            this.btnperiod.Size = new System.Drawing.Size(57, 37);
            this.btnperiod.TabIndex = 18;
            this.btnperiod.Text = ".";
            this.btnperiod.UseVisualStyleBackColor = true;
            this.btnperiod.Click += new System.EventHandler(this.btnperiod_Click);
            //
            // btnroot
            //
            this.btnroot.Location = new System.Drawing.Point(255, 271);
            this.btnroot.Name = "btnroot";
            this.btnroot.Size = new System.Drawing.Size(57, 37);
            this.btnroot.TabIndex = 20;
            this.btnroot.Text = "√";
            this.btnroot.UseVisualStyleBackColor = true;
            this.btnroot.Click += new System.EventHandler(this.btnroot_Click);
            //
            // Form1
            //
            this.AutoScaleDimensions = new System.Drawing.SizeF(7F, 12F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.ClientSize = new System.Drawing.Size(333, 335);
            this.Controls.Add(this.btnroot);
            this.Controls.Add(this.btnequal);
            this.Controls.Add(this.btnperiod);
            this.Controls.Add(this.btnzero);
            this.Controls.Add(this.btndivide);
            this.Controls.Add(this.btnnine);
            this.Controls.Add(this.btneight);
            this.Controls.Add(this.btnseven);
            this.Controls.Add(this.btnmultiply);
            this.Controls.Add(this.btnsix);
            this.Controls.Add(this.btfive);
            this.Controls.Add(this.btnfour);
            this.Controls.Add(this.btnplus);
            this.Controls.Add(this.btnthree);
            this.Controls.Add(this.btntwo);
            this.Controls.Add(this.btnone);
            this.Controls.Add(this.btnminus);
            this.Controls.Add(this.btnback);
            this.Controls.Add(this.btnCE);
            this.Controls.Add(this.btnC);
            this.Controls.Add(this.textBox1);
            this.Name = "Form1";
            this.Text = "미니계산기";
            this.ResumeLayout(false);
            this.PerformLayout();

        }

        #endregion

        private System.Windows.Forms.TextBox textBox1;
        private System.Windows.Forms.Button btnC;
        private System.Windows.Forms.Button btnCE;
        private System.Windows.Forms.Button btnback;
        private System.Windows.Forms.Button btnminus;
        private System.Windows.Forms.Button btnplus;
        private System.Windows.Forms.Button btnthree;
        private System.Windows.Forms.Button btntwo;
        private System.Windows.Forms.Button btnone;
        private System.Windows.Forms.Button btndivide;
        private System.Windows.Forms.Button btnnine;
        private System.Windows.Forms.Button btneight;
        private System.Windows.Forms.Button btnseven;
        private System.Windows.Forms.Button btnmultiply;
        private System.Windows.Forms.Button btnsix;
        private System.Windows.Forms.Button btfive;
        private System.Windows.Forms.Button btnfour;
        private System.Windows.Forms.Button btnzero;
        private System.Windows.Forms.Button btnequal;
        private System.Windows.Forms.Button btnperiod;
        private System.Windows.Forms.Button btnroot;
    }
}

 

 

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2. C# 소스코드

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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace Calc
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        float num1, ans;
        int count;

        private void btnC_Click_1(object sender, EventArgs e)
        {
            textBox1.Clear();
            count = 0;
        }

        private void btnCE_Click(object sender, EventArgs e)
        {

            if (num1 == 0 && textBox1.TextLength > 0)
            {
                num1 = 0; textBox1.Clear();
            }
            else if (num1 > 0 && textBox1.TextLength > 0)
            {
                textBox1.Clear();
            }

        }

        private void btnback_Click(object sender, EventArgs e)
        {

            int lenght = textBox1.TextLength - 1;
            string text = textBox1.Text;
            textBox1.Clear();
            for (int i = 0; i < lenght; i++)
                textBox1.Text = textBox1.Text + text[i];

        }

        private void btnminus_Click(object sender, EventArgs e)
        {
            if (textBox1.Text != "")
            {
                num1 = float.Parse(textBox1.Text);
                textBox1.Clear();
                textBox1.Focus();
                count = 1;
            }
        }

        private void btnone_Click(object sender, EventArgs e)
        {
            textBox1.Text = textBox1.Text + 1;
        }

        private void bttntwo_Click(object sender, EventArgs e)
        {
            textBox1.Text = textBox1.Text + 2;
        }

        private void btnthree_Click(object sender, EventArgs e)
        {
            textBox1.Text = textBox1.Text + 3;
        }

        private void btnplus_Click(object sender, EventArgs e)
        {
            num1 = float.Parse(textBox1.Text);
            textBox1.Clear();
            textBox1.Focus();
            count = 2;
        }

        private void btnfour_Click(object sender, EventArgs e)
        {
            textBox1.Text = textBox1.Text + 4;
        }

        private void btnfive_Click(object sender, EventArgs e)
        {
            textBox1.Text = textBox1.Text + 5;
        }

        private void btnsix_Click(object sender, EventArgs e)
        {
            textBox1.Text = textBox1.Text + 6;
        }

        private void btnmultiply_Click(object sender, EventArgs e)
        {
            num1 = float.Parse(textBox1.Text);
            textBox1.Clear();
            textBox1.Focus();
            count = 3;
        }

        private void btnseven_Click(object sender, EventArgs e)
        {
            textBox1.Text = textBox1.Text + 7;
        }

        private void btneight_Click(object sender, EventArgs e)
        {
            textBox1.Text = textBox1.Text + 8;
        }

        private void btnnine_Click(object sender, EventArgs e)
        {
            textBox1.Text = textBox1.Text + 9;
        }

        private void btndivide_Click(object sender, EventArgs e)
        {
            num1 = float.Parse(textBox1.Text);
            textBox1.Clear();
            textBox1.Focus();
            count = 4;
        }

        private void btnzero_Click(object sender, EventArgs e)
        {
            textBox1.Text = textBox1.Text + 0;
        }

        private void btnperiod_Click(object sender, EventArgs e)
        {
            int c = textBox1.TextLength;
            int flag = 0;
            string text = textBox1.Text;
            for (int i = 0; i < c; i++)
            {
                if (text[i].ToString() == ".")
                {
                    flag = 1; break;
                }
                else
                {
                    flag = 0;
                }
            }
            if (flag == 0)
            {
                textBox1.Text = textBox1.Text + ".";
            }
        }

        private void btnequal_Click(object sender, EventArgs e)
        {
            compute(count);
        }

        private void btnroot_Click(object sender, EventArgs e)
        {
            num1 = float.Parse(textBox1.Text);
            textBox1.Clear();
            textBox1.Focus();
            count = 5;
        }

        public void compute(int count)
        {
            switch (count)
            {
                case 1:
                    ans = num1 - float.Parse(textBox1.Text);
                    textBox1.Text = ans.ToString();
                    break;
                case 2:
                    ans = num1 + float.Parse(textBox1.Text);
                    textBox1.Text = ans.ToString();
                    break;
                case 3:
                    ans = num1 * float.Parse(textBox1.Text);
                    textBox1.Text = ans.ToString();
                    break;
                case 4:
                    ans = num1 / float.Parse(textBox1.Text);
                    textBox1.Text = ans.ToString();
                    break;
                case 5:
                    ans = (float)Math.Sqrt(num1);
                    textBox1.Text = ans.ToString();
                    break;
                default:
                    break;
            }
        }
    }
}

 

 

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