1、打开Microsoft visual studio 2017软件,单击页面最上角的新建按钮;
2、在新建列表中,选择项目选项,在项目列咐御表中选择Visual C++选项;
3、在d出的常规设置页面中,设置相应的项目名称和保存位置;
4、单击页面最下方的确定按钮,待系统完成加载后即衡改岩可使用VS 2017编写c语言程序。
1、在VS里创建一个Web应用程序。2、右击项目名称,添加,新建项,web窗体,改名,添加。
3、页面左下角有设计、拆分和源三个视图选项,点击设计,按照简单地计算器的设计图拖动左侧工具栏中的插件即可。
//简单的计算器using System
using System.Drawing
using System.Collections
using System.ComponentModel
using System.Windows.Forms
namespace wincalc
{
///
/// Summary description for calcForm.
///
public class calcForm : System.Windows.Forms.Form
{
private System.Windows.Forms.Button button1
private System.Windows.Forms.Button button2
private System.Windows.Forms.Button button3
private System.Windows.Forms.Button 搜巧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 世裂键System.Windows.Forms.Button button9
private System.Windows.Forms.Button button10
private System.Windows.Forms.Button bClr
private System.Windows.Forms.Button bDot
private System.Windows.Forms.Button bPlus
private System.Windows.Forms.Button bSub
private System.Windows.Forms.Button bMul
private System.Windows.Forms.Button bDiv
private System.Windows.Forms.Button bEqu
private System.Windows.Forms.TextBox txtCalc
//以下是要添加的代码
//定义变量
Double dblAcc
Double dblSec
bool blnClear,blnFrstOpen
String strOper
//以上是添源裂加的代码
///
/// Required designer variable.
///
private System.ComponentModel.Container components = null
public calcForm()
{
//
// Required for Windows Form Designer support
//
InitializeComponent()
//
// TODO: Add any constructor code after InitializeComponent call
//
//以下是要添加的代码
//初始化设量
dblAcc=0
dblSec=0
blnFrstOpen=true
blnClear=true
strOper=new string('=',1)
//以上是添加的代码
}
///
/// Clean up any resources being used.
///
protected override void Dispose( bool disposing )
{
if( disposing )
{
if(components != null)
{
components.Dispose()
}
}
base.Dispose( disposing )
}
#region Windows Form Designer generated code
///
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
///
private void InitializeComponent()
{
this.bPlus = new System.Windows.Forms.Button()
this.bMul = new System.Windows.Forms.Button()
this.bDot = new System.Windows.Forms.Button()
this.txtCalc = new System.Windows.Forms.TextBox()
this.bClr = new System.Windows.Forms.Button()
this.bDiv = new System.Windows.Forms.Button()
this.bSub = new System.Windows.Forms.Button()
this.button8 = new System.Windows.Forms.Button()
this.button9 = new System.Windows.Forms.Button()
this.bEqu = new System.Windows.Forms.Button()
this.button10 = 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.button1 = new System.Windows.Forms.Button()
this.button2 = new System.Windows.Forms.Button()
this.button3 = new System.Windows.Forms.Button()
this.SuspendLayout()
//
// bPlus
//
this.bPlus.BackColor = System.Drawing.SystemColors.Control
this.bPlus.ForeColor = System.Drawing.SystemColors.ControlText
this.bPlus.Location = new System.Drawing.Point(208, 112)
this.bPlus.Name = "bPlus"
this.bPlus.Size = new System.Drawing.Size(32, 80)
this.bPlus.TabIndex = 1
this.bPlus.Text = "+"
//以下是要添加的代码
bPlus.Click += new System.EventHandler(this.btn_Oper)
//以上是添加的代码
//
// bMul
//
this.bMul.Location = new System.Drawing.Point(160, 112)
this.bMul.Name = "bMul"
this.bMul.Size = new System.Drawing.Size(32, 32)
this.bMul.TabIndex = 1
this.bMul.Text = "*"
//以下是要添加的代码
bMul.Click += new System.EventHandler(this.btn_Oper)
//以上是添加的代码
//
// bDot
//
this.bDot.ForeColor = System.Drawing.Color.Black
this.bDot.Location = new System.Drawing.Point(112, 208)
this.bDot.Name = "bDot"
this.bDot.Size = new System.Drawing.Size(32, 32)
this.bDot.TabIndex = 0
this.bDot.Text = "."
//以下是要添加的代码
bDot.Click += new System.EventHandler(this.btn_clk)
//以上是添加的代码
//
// txtCalc
//
this.txtCalc.Location = new System.Drawing.Point(16, 24)
this.txtCalc.Name = "txtCalc"
this.txtCalc.ReadOnly = true
this.txtCalc.RightToLeft = System.Windows.Forms.RightToLeft.Yes
this.txtCalc.Size = new System.Drawing.Size(224, 21)
this.txtCalc.TabIndex = 2
this.txtCalc.Text = ""
//
// bClr
//
this.bClr.BackColor = System.Drawing.SystemColors.Control
this.bClr.ForeColor = System.Drawing.SystemColors.ControlText
this.bClr.Location = new System.Drawing.Point(208, 64)
this.bClr.Name = "bClr"
this.bClr.Size = new System.Drawing.Size(32, 32)
this.bClr.TabIndex = 0
this.bClr.Text = "AC"
//以下是要添加的代码
bClr.Click += new System.EventHandler(this.btn_clr)
//以上是添加的代码
//
// bDiv
//
this.bDiv.Location = new System.Drawing.Point(160, 160)
this.bDiv.Name = "bDiv"
this.bDiv.Size = new System.Drawing.Size(32, 32)
this.bDiv.TabIndex = 1
this.bDiv.Text = "/"
//以下是要添加的代码
bDiv.Click += new System.EventHandler(this.btn_Oper)
//以上是添加的代码
//
// bSub
//
this.bSub.Location = new System.Drawing.Point(160, 64)
this.bSub.Name = "bSub"
this.bSub.Size = new System.Drawing.Size(32, 32)
this.bSub.TabIndex = 1
this.bSub.Text = "-"
//以下是要添加的代码
bSub.Click += new System.EventHandler(this.btn_Oper)
//以上是添加的代码
//
// button8
//
this.button8.Location = new System.Drawing.Point(16, 64)
this.button8.Name = "button8"
this.button8.Size = new System.Drawing.Size(32, 32)
this.button8.TabIndex = 0
this.button8.Text = "7"
//以下是要添加的代码
button8.Click += new System.EventHandler(this.btn_clk)
//以上是添加的代码
//
// button9
//
this.button9.Location = new System.Drawing.Point(64, 64)
this.button9.Name = "button9"
this.button9.Size = new System.Drawing.Size(32, 32)
this.button9.TabIndex = 0
this.button9.Text = "8"
//以下是要添加的代码
button9.Click += new System.EventHandler(this.btn_clk)
//以上是添加的代码
//
// bEqu
//
this.bEqu.BackColor = System.Drawing.SystemColors.Control
this.bEqu.ForeColor = System.Drawing.SystemColors.ControlText
this.bEqu.Location = new System.Drawing.Point(160, 208)
this.bEqu.Name = "bEqu"
this.bEqu.Size = new System.Drawing.Size(80, 32)
this.bEqu.TabIndex = 1
this.bEqu.Text = "="
//以下是要添加的代码
bEqu.Click += new System.EventHandler(this.btn_equ)
//以上是添加的代码
//
// button10
//
this.button10.Location = new System.Drawing.Point(112, 64)
this.button10.Name = "button10"
this.button10.Size = new System.Drawing.Size(32, 32)
this.button10.TabIndex = 0
this.button10.Text = "9"
//以下是要添加的代码
button10.Click += new System.EventHandler(this.btn_clk)
//以上是添加的代码
//
// button4
//
this.button4.Location = new System.Drawing.Point(112, 160)
this.button4.Name = "button4"
this.button4.Size = new System.Drawing.Size(32, 32)
this.button4.TabIndex = 0
this.button4.Text = "3"
//以下是要添加的代码
button4.Click += new System.EventHandler(this.btn_clk)
//以上是添加的代码
//
// button5
//
this.button5.Location = new System.Drawing.Point(16, 112)
this.button5.Name = "button5"
this.button5.Size = new System.Drawing.Size(32, 32)
this.button5.TabIndex = 0
this.button5.Text = "4"
//以下是要添加的代码
button5.Click += new System.EventHandler(this.btn_clk)
//以上是添加的代码
//
// button6
//
this.button6.Location = new System.Drawing.Point(64, 112)
this.button6.Name = "button6"
this.button6.Size = new System.Drawing.Size(32, 32)
this.button6.TabIndex = 0
this.button6.Text = "5"
//以下是要添加的代码
button6.Click += new System.EventHandler(this.btn_clk)
//以上是添加的代码
//
// button7
//
this.button7.Location = new System.Drawing.Point(112, 112)
this.button7.Name = "button7"
this.button7.Size = new System.Drawing.Size(32, 32)
this.button7.TabIndex = 0
this.button7.Text = "6"
//以下是要添加的代码
button7.Click += new System.EventHandler(this.btn_clk)
//以上是添加的代码
//
// button1
//
this.button1.BackColor = System.Drawing.SystemColors.Control
this.button1.ForeColor = System.Drawing.Color.Black
this.button1.Location = new System.Drawing.Point(16, 208)
this.button1.Name = "button1"
this.button1.Size = new System.Drawing.Size(80, 32)
this.button1.TabIndex = 0
this.button1.Text = "0"
//以下是要添加的代码
button1.Click += new System.EventHandler(this.btn_clk)
//以上是添加的代码
//
// button2
//
this.button2.Location = new System.Drawing.Point(16, 160)
this.button2.Name = "button2"
this.button2.Size = new System.Drawing.Size(32, 32)
this.button2.TabIndex = 0
this.button2.Text = "1"
//以下是要添加的代码
button2.Click += new System.EventHandler(this.btn_clk)
//以上是添加的代码
//
// button3
//
this.button3.Location = new System.Drawing.Point(64, 160)
this.button3.Name = "button3"
this.button3.Size = new System.Drawing.Size(32, 32)
this.button3.TabIndex = 0
this.button3.Text = "2"
//以下是要添加的代码
button3.Click += new System.EventHandler(this.btn_clk)
//以上是添加的代码
//
// calcForm
//
this.AutoScaleBaseSize = new System.Drawing.Size(6, 14)
this.ClientSize = new System.Drawing.Size(256, 261)
this.Controls.AddRange(new System.Windows.Forms.Control[] {
this.txtCalc,
this.bEqu,
this.bDiv,
this.bMul,
this.bSub,
this.bPlus,
this.bDot,
this.bClr,
this.button10,
this.button9,
this.button8,
this.button7,
this.button6,
this.button5,
this.button4,
this.button3,
this.button2,
this.button1})
this.Name = "calcForm"
this.Text = "计算器"
this.ResumeLayout(false)
}
#endregion
//以下是要添加的代码
//小数点的 *** 作
private void btn_clk(object obj,EventArgs ea)
{
if(blnClear)
txtCalc.Text=""
Button b3=(Button)obj
txtCalc.Text+=b3.Text
if(txtCalc.Text==".")
txtCalc.Text="0."
dblSec=Convert.ToDouble(txtCalc.Text)
blnClear=false
}
//程序开始点
private static void Main()
{
Application.Run(new calcForm())
}
private void btn_Oper(object obj,EventArgs ea)
{
Button tmp=(Button)obj
strOper=tmp.Text
if(blnFrstOpen)
dblAcc=dblSec
else
calc()
blnFrstOpen=false
blnClear=true
}
//等号运算
private void btn_equ(object obj,EventArgs ea)
{
calc()
}
//所有运算 *** 作
private void calc()
{
switch(strOper)
{
case "+":
dblAcc+=dblSec //加号运算
break
case "-":
dblAcc-=dblSec //减号运算
break
case "*":
dblAcc*=dblSec //乘号运算
break
case "/":
dblAcc/=dblSec //除号运算
break
}
strOper="=" //等号运算
blnFrstOpen=true
txtCalc.Text=Convert.ToString(dblAcc)//将运算结果转换成字符类型,并输出
dblSec=dblAcc//将运算数A的值放入运算数B中,以便后面运算
}
//清除按钮
private void btn_clr(object obj,EventArgs ea)
{
clear()
}
//清除按钮的 *** 作
private void clear()
{
dblAcc=0
dblSec=0
blnFrstOpen=true
txtCalc.Text=""
txtCalc.Focus()//设置焦点为txtCalc
}
//以上是添加的代码
}
}
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