网页计算器源代码（网页版计算器）[20240426更新]

今天给各位分享网页计算器源代码的知识，其中也会对网页版计算器进行解释，如果能碰巧解决你现在面临的问题，别忘了关注本站，现在开始吧！

本文目录一览：

• 1、我想用网页代码编辑一个可以解出方程的根的计算器，该怎样做？
• 2、用C语言写的计算器源代码
• 3、JAVA课程设计计算器的源代码
• 4、如何查看电脑上某程序的源代码 如计算器
• 5、计算器源代码

我想用网页代码编辑一个可以解出方程的根的计算器，该怎样做？

Math 对象方法

方法描述

abs(x)    返回数的绝对值。    

acos(x)    返回数的反余弦值。    

asin(x)    返回数的反正弦值。    

atan(x)    以介于 -PI/2 与 PI/2 弧度之间的数值来返回 x 的反正切值。    

atan2(y,x)    返回从 x 轴到点 (x,y) 的角度（介于 -PI/2 与 PI/2 弧度之间）。    

ceil(x)    对数进行上舍入。    

cos(x)    返回数的余弦。    

exp(x)    返回 e 的指数。    

floor(x)    对数进行下舍入。    

log(x)    返回数的自然对数（底为e）。    

max(x,y)    返回 x 和 y 中的最高值。    

min(x,y)    返回 x 和 y 中的最低值。    

pow(x,y)    返回 x 的 y 次幂。    

random()    返回 0 ~ 1 之间的随机数。    

round(x)    把数四舍五入为最接近的整数。    

sin(x)    返回数的正弦。    

sqrt(x)    返回数的平方根。    

tan(x)    返回角的正切。    

toSource()    返回该对象的源代码。    

valueOf()    返回 Math 对象的原始值。

用C语言写的计算器源代码

#includestdio.h

#includeiostream.h

#includestdlib.h

#includestring.h

#includectype.h

typedef float DataType;

typedef struct

{

DataType *data;

int max;

int top;

}Stack;

void SetStack(Stack *S,int n)

{

S-data=(DataType*)malloc(n*sizeof(DataType));

if(S-data==NULL)

{

printf("overflow");

exit(1);

}

S-max=n;

S-top=-1;

}

void FreeStack(Stack *S)

{

free(S-data);

}

int StackEmpty(Stack *S)

{

if(S-top==-1)

return(1);

return(0);

}

DataType Peek(Stack *S)

{

if(S-top==S-max-1)

{

printf("Stack is empty!\n");

exit(1);

}

return(S-data[S-top]);

}

void Push(Stack *S,DataType item)

{

if(S-top==S-max-1)

{

printf("Stack is full!\n");

exit(1);

}

S-top++;

S-data[S-top]=item;

}

DataType Pop(Stack *S)

{

if(S-top==-1)

{

printf("Pop an empty stack!\n");

exit(1);

}

S-top--;

return(S-data[S-top+1]);

}

typedef struct

{

char op;

int inputprecedence;

int stackprecedence;

}DataType1;

typedef struct

{

DataType1 *data;

int max;

int top;

}Stack1;

void SetStack1(Stack1 *S,int n)

{

S-data=(DataType1*)malloc(n*sizeof(DataType1));

if(S-data==NULL)

{

printf("overflow");

exit(1);

}

S-max=n;

S-top=-1;

}

void FreeStack1(Stack1 *S)

{

free(S-data);

}

int StackEmpty1(Stack1 *S)

{

if(S-top==-1)

return(1);

return(0);

}

DataType1 Peek1(Stack1 *S)

{

if(S-top==S-max-1)

{

printf("Stack1 is empty!\n");

exit(1);

}

return(S-data[S-top]);

}

void Push1(Stack1 *S,DataType1 item)

{

if(S-top==S-max-1)

{

printf("Stack is full!\n");

exit(1);

}

S-top++;

S-data[S-top]=item;

}

DataType1 Pop1(Stack1 *S)

{

if(S-top==-1)

{

printf("Pop an empty stack!\n");

exit(1);

}

S-top--;

return(S-data[S-top+1]);

}

DataType1 MathOptr(char ch)

{

DataType1 optr;

optr.op=ch;

switch(optr.op)

{

case'+':

case'-':

optr.inputprecedence=1;

optr.stackprecedence=1;

break;

case'*':

case'/':

optr.inputprecedence=2;

optr.stackprecedence=2;

break;

case'(':

optr.inputprecedence=3;

optr.stackprecedence=-1;

break;

case')':

optr.inputprecedence=0;

optr.stackprecedence=0;

break;

}

return(optr);

}

void Evaluate(Stack *OpndStack,DataType1 optr)

{

DataType opnd1,opnd2;

opnd1=Pop(OpndStack);

opnd2=Pop(OpndStack);

switch(optr.op)

{

case'+':

Push(OpndStack,opnd2+opnd1);

break;

case'-':

Push(OpndStack,opnd2-opnd1);

break;

case'*':

Push(OpndStack,opnd2*opnd1);

break;

case'/':

Push(OpndStack,opnd2/opnd1);

break;

}

}

int isoptr(char ch)

{

if(ch=='+'||ch=='-'||ch=='*'||ch=='/'||ch=='(')

return(1);

return(0);

}

void Infix(char *str)

{

int i,k,n=strlen(str);

char ch,numstr[10];

DataType opnd;

DataType1 optr;

Stack OpndStack;

Stack1 OptrStack;

SetStack(OpndStack,n);

SetStack1(OptrStack,n);

k=0;

ch=str[k];

while(ch!='=')

if(isdigit(ch)||ch=='.')

{

for(i=0;isdigit(ch)||ch=='.';i++)

{

numstr[i]=ch;

k++;

ch=str[k];

}

numstr[i]='\0';

opnd= atof(numstr);

Push(OpndStack,opnd);

}

else

if(isoptr(ch))

{

optr=MathOptr(ch);

while(Peek1(OptrStack).stackprecedence=optr.inputprecedence)

Evaluate(OpndStack,Pop1(OptrStack));

Push1(OptrStack,optr);

k++;

ch=str[k];

}

else if(ch==')')

{

optr=MathOptr(ch);

while(Peek1(OptrStack).stackprecedence=optr.inputprecedence)

Evaluate(OpndStack,Pop1(OptrStack));

Pop1(OptrStack);

k++;

ch=str[k];

}

while(!StackEmpty1(OptrStack))

Evaluate(OpndStack,Pop1(OptrStack));

opnd=Pop(OpndStack);

cout"你输入表达式的计算结果为"endl;

printf("%-6.2f\n",opnd);

FreeStack(OpndStack);

FreeStack1(OptrStack);

}

void main()

{

cout"请输入你要计算的表达式,并以“=”号结束。"endl;

char str[50];

gets(str);

Infix(str);

=================================================================

哈哈！给分吧！

JAVA课程设计计算器的源代码

比较完整的Java计算器

import javax.swing.*;

import javax.swing.event.*;

import java.awt.*;

import java.awt.event.*;

public class calculator extends JFrame implements ActionListener

{//这里我把JFrame写成Frame，这个错误找了好久

JFrame frame;

private JButton jia=new JButton("+");

private JButton jian=new JButton("-");

private JButton cheng=new JButton("*");

private JButton chu=new JButton("/");

private JButton qiuyi=new JButton("%");

private JButton deng=new JButton("=");

private JButton fu=new JButton("+/-");

private JButton dian=new JButton(".");

private JButton kai=new JButton("sqrt");

private JButton diao=new JButton("1/x");

private JButton aa=new JButton("A");

private JButton bb=new JButton("B");

private JButton cc=new JButton("C");

private JButton dd=new JButton("D");

private JButton ee=new JButton("E");

private JButton ff=new JButton("F");

private TextField k1=new TextField();

private objConversion convert = new objConversion();

JMenuItem copy,paste,s,t,help,about,me;

JRadioButton sixteen,ten,eight,two;

JButton backspace,ce,c,num0,num1,num2,num3,num4,num5,num6,num7,num8,num9;

Container cp;

JTextField text;

String copycontent="";

boolean clickable=true,clear=true;

int all=0;

double qian;

String fuhao;

int jin=10,first=1;

public calculator()

{

setTitle("计算器－杨彩制作");

setSize(400,300);

setLocation(250,200);

text=new JTextField(25);

// text.setEnabled(false);

text.setText("0.");

text.setHorizontalAlignment(JTextField.RIGHT);//从右到左

JPanel cp1=new JPanel();

JPanel cp2=new JPanel();

JPanel cp3=new JPanel();

cp=getContentPane();

cp.add(cp1,"North");

cp.add(cp2,"Center");

cp.add(cp3,"South");

cp1.setLayout(new GridLayout(1,6));

cp2.setLayout(new GridLayout(2,4));

cp3.setLayout(new GridLayout(6,6));

sixteen=new JRadioButton("十六进制");

sixteen.setVisible(false);

ten=new JRadioButton("十进制",true);

ten.setVisible(false);

eight=new JRadioButton("八进制");

eight.setVisible(false);

two=new JRadioButton("二进制");

two.setVisible(false);

sixteen.addActionListener(this);

ten.addActionListener(this);

eight.addActionListener(this);

two.addActionListener(this);

ButtonGroup btg=new ButtonGroup();

btg.add(sixteen);

btg.add(ten);

btg.add(eight);

btg.add(two);

JTextField t3=new JTextField(25);

cp1.add(text);

// text.setEnabled(false);

text.setEditable(false);

text.setBackground(new Color(255, 255, 255));

cp2.add(sixteen);

cp2.add(ten);

cp2.add(eight);

cp2.add(two);

backspace=new JButton("Backspace");

backspace.setForeground(new Color(255,0,0));

backspace.addActionListener(this);

ce=new JButton("CE");

ce.setForeground(new Color(255,0,0));

ce.addActionListener(this);

c=new JButton("C");

c.setForeground(new Color(255,0,0));

c.addActionListener(this);

k1.setVisible(false);

cp2.add(k1);

cp2.add(backspace);

cp2.add(ce);

cp2.add(c);

num0=new JButton("0");

num1=new JButton("1");

num2=new JButton("2");

num3=new JButton("3");

num4=new JButton("4");

num5=new JButton("5");

num6=new JButton("6");

num7=new JButton("7");

num8=new JButton("8");

num9=new JButton("9");

cp3.add(num7);

num7.addActionListener(this);

cp3.add(num8);

num8.addActionListener(this);

cp3.add(num9);

num9.addActionListener(this);

cp3.add(chu);

chu.setForeground(new Color(255,0,0));

chu.addActionListener(this);

cp3.add(kai);

kai.addActionListener(this);

cp3.add(num4);

num4.addActionListener(this);

cp3.add(num5);

num5.addActionListener(this);

cp3.add(num6);

num6.addActionListener(this);

cp3.add(cheng);

cheng.setForeground(new Color(255,0,0));

cheng.addActionListener(this);

cp3.add(qiuyi);

qiuyi.addActionListener(this);

cp3.add(num1);

num1.addActionListener(this);

cp3.add(num2);

num2.addActionListener(this);

cp3.add(num3);

num3.addActionListener(this);

cp3.add(jian);

jian.setForeground(new Color(255,0,0));

jian.addActionListener(this);

cp3.add(diao);

diao.addActionListener(this);

cp3.add(num0);

num0.addActionListener(this);

cp3.add(fu);

fu.addActionListener(this);

cp3.add(dian);

dian.addActionListener(this);

cp3.add(jia);

jia.setForeground(new Color(255,0,0));

jia.addActionListener(this);

cp3.add(deng);

deng.setForeground(new Color(255,0,0));

deng.addActionListener(this);

cp3.add(aa);

aa.addActionListener(this);

cp3.add(bb);

bb.addActionListener(this);

cp3.add(cc);

cc.addActionListener(this);

cp3.add(dd);

dd.addActionListener(this);

cp3.add(ee);

ee.addActionListener(this);

cp3.add(ff);

ff.addActionListener(this);

aa.setVisible(false);

bb.setVisible(false);

cc.setVisible(false);

dd.setVisible(false);

ee.setVisible(false);

ff.setVisible(false);

JMenuBar mainMenu = new JMenuBar();

setJMenuBar(mainMenu);

JMenu editMenu = new JMenu("编辑");

JMenu viewMenu = new JMenu("查看");

JMenu helpMenu = new JMenu("帮助");

mainMenu.add(editMenu);

mainMenu.add(viewMenu);

mainMenu.add(helpMenu);

copy = new JMenuItem(" 复制");

paste = new JMenuItem(" 粘贴");

KeyStroke copyks=KeyStroke.getKeyStroke(KeyEvent.VK_C,Event.CTRL_MASK);

copy.setAccelerator(copyks);//设置退出菜单选项加上快捷键

KeyStroke pasteks=KeyStroke.getKeyStroke(KeyEvent.VK_V,Event.CTRL_MASK);

paste.setAccelerator(pasteks);//设置退出菜单选项加上快捷键

editMenu.add(copy);

editMenu.add(paste);

copy.addActionListener(this);

paste.addActionListener(this);

t = new JMenuItem("●标准型");

s = new JMenuItem(" 科学型");

viewMenu.add(t);

viewMenu.add(s);

t.addActionListener(this);

s.addActionListener(this);

help = new JMenuItem(" 帮助主题");

about = new JMenuItem(" 关于计算器");

me = new JMenuItem(" 作者主页");

helpMenu.add(help);

helpMenu.add(about);

helpMenu.add(me);

help.addActionListener(this);

about.addActionListener(this);

me.addActionListener(this);

addWindowListener(new WindowDestroyer());//结束窗口

}

public void actionPerformed(ActionEvent e)

{//响应动作代码

if(first==1)

text.setText("");

first=0;//第一次把文本框0.清空

Object temp = e.getSource();

if(temp==copy)

{

copycontent = text.getText();

}

if(temp==paste)

{

text.setText(text.getText()+copycontent);

}

if(temp==t)

{//标准

sixteen.setVisible(false);

ten.setVisible(false);

eight.setVisible(false);

two.setVisible(false);

t.setText("●标准型");

s.setText(" 科学型");

aa.setVisible(false);

bb.setVisible(false);

cc.setVisible(false);

dd.setVisible(false);

ee.setVisible(false);

ff.setVisible(false);

}

if(temp==s)

{//科学

sixteen.setVisible(true);

ten.setVisible(true);

eight.setVisible(true);

two.setVisible(true);

t.setText(" 标准型");

s.setText("●科学型");

aa.setVisible(true);

bb.setVisible(true);

cc.setVisible(true);

dd.setVisible(true);

ee.setVisible(true);

ff.setVisible(true);

aa.setEnabled(false);

bb.setEnabled(false);

cc.setEnabled(false);

dd.setEnabled(false);

ee.setEnabled(false);

ff.setEnabled(false);

}

if(temp==help)

{ //打开系统帮助文件 要查资料

try

{

String filePath = "C:/WINDOWS/Help/calc.chm";

Runtime.getRuntime().exec("cmd.exe /c "+filePath);

}

catch(Exception eeee)

{

System.out.println("打开系统的计算器出错");

}

}

if(temp==about)

{

JOptionPane.showMessageDialog(frame," Java计算器\n 杨彩 制作\n\n ","关于计算器",JOptionPane.INFORMATION_MESSAGE); ;

}

if(temp==me)

{

try

{

Process p = Runtime.getRuntime().exec("explorer ");

}

catch(Exception eeee)

{

System.out.println("打开指定网页出错");

}

}

try

{

if(temp==sixteen)

{

String hex=text.getText();

int inthex=Integer.parseInt(hex,jin);//先把数变为10进制

text.setText(convert.decHex(inthex)) ;

jin=16;

aa.setEnabled(true);

bb.setEnabled(true);

cc.setEnabled(true);

dd.setEnabled(true);

ee.setEnabled(true);

ff.setEnabled(true);

num2.setEnabled(true);

num3.setEnabled(true);

num4.setEnabled(true);

num5.setEnabled(true);

num6.setEnabled(true);

num7.setEnabled(true);

num8.setEnabled(true);

num9.setEnabled(true);

}

if(temp==eight)

{

String oct =text.getText();

int intoct=Integer.parseInt(oct,jin);

text.setText(convert.decOct(intoct)) ;

jin=8;

aa.setEnabled(false);

bb.setEnabled(false);

cc.setEnabled(false);

dd.setEnabled(false);

ee.setEnabled(false);

ff.setEnabled(false);

num2.setEnabled(true);

num3.setEnabled(true);

num4.setEnabled(true);

num5.setEnabled(true);

num6.setEnabled(true);

num7.setEnabled(true);

num8.setEnabled(false);

num9.setEnabled(false);

}

if(temp==two)

{

String bin=text.getText();

int intbin=Integer.parseInt(bin,jin);

text.setText(convert.decBin(intbin));

jin=2;

aa.setEnabled(false);

bb.setEnabled(false);

cc.setEnabled(false);

dd.setEnabled(false);

ee.setEnabled(false);

ff.setEnabled(false);

num2.setEnabled(false);

num3.setEnabled(false);

num4.setEnabled(false);

num5.setEnabled(false);

num6.setEnabled(false);

num7.setEnabled(false);

num8.setEnabled(false);

num9.setEnabled(false);

}

if(temp==ten)

{

String dec=text.getText();

int intdec=Integer.parseInt(dec,jin);

// text.setText(convert.decDec(intdec)); //本句会把123变成321

text.setText(intdec+"");

jin=10;

aa.setEnabled(false);

bb.setEnabled(false);

cc.setEnabled(false);

dd.setEnabled(false);

ee.setEnabled(false);

ff.setEnabled(false);

num2.setEnabled(true);

num3.setEnabled(true);

num4.setEnabled(true);

num5.setEnabled(true);

num6.setEnabled(true);

num7.setEnabled(true);

num8.setEnabled(true);

num9.setEnabled(true);

}

}

catch(Exception ee)

{

System.out.println("转换出错,可能你没有输入任何字符");

text.setText("转换出错");

clear=false;

}

if(temp==backspace)

{//退格

String s = text.getText();

text.setText("");

for (int i = 0; i s.length() - 1; i++)

{

char a = s.charAt(i);

text.setText(text.getText() + a);

}

}

if (temp==ce)

{

text.setText("0.");

clear=true;

first=1;

}

if (temp==c)

{

text.setText("0."); ;

clear=true;

first=1;

}

if(temp==num0)

{

if(clear==false)//判断是否点击了符号位

text.setText("");

text.setText(text.getText()+"0");

}

if(temp==num1)

{

if(clear==false)

text.setText("");

text.setText(text.getText()+"1");

clear=true;//第二次不在清空（前二句）

}

if(temp==num2)

{

if(clear==false)

text.setText("");

text.setText(text.getText()+"2");

clear=true;

}

if(temp==num3)

{

if(clear==false)

text.setText("");

text.setText(text.getText()+"3");

clear=true;

}

if(temp==num4)

{

if(clear==false)

text.setText("");

text.setText(text.getText()+"4");

clear=true;

}

if(temp==num5)

{

if(clear==false)

text.setText("");

text.setText(text.getText()+"5");

clear=true;

}

if(temp==num6)

{

if(clear==false)

text.setText("");

text.setText(text.getText()+"6");

clear=true;

}

if(temp==num7)

{

if(clear==false)

text.setText("");

text.setText(text.getText()+"7");

clear=true;

}

if(temp==num8)

{

if(clear==false)

text.setText("");

text.setText(text.getText()+"8");

clear=true;

}

if(temp==num9)

{

if(clear==false)

text.setText("");

text.setText(text.getText()+"9");

clear=true;

}

if(temp==aa)

{

text.setText(text.getText()+"A");

}

if(temp==bb)

{

text.setText(text.getText()+"B");

}

if(temp==cc)

{

text.setText(text.getText()+"C");

}

if(temp==dd)

{

text.setText(text.getText()+"D");

}

if(temp==ee)

{

text.setText(text.getText()+"E");

}

if(temp==ff)

{

text.setText(text.getText()+"F");

}

if(temp==dian)

{

clickable=true;

for (int i = 0; i text.getText().length(); i++)

if ('.' == text.getText().charAt(i))

{

clickable=false;

break;

} //第一层判断是否里面含有小数点;

if(clickable==true)//第二坛判断

text.setText(text.getText()+".");

}

try

{

if(temp==jia)

{//加法

qian=Double.parseDouble(text.getText());

fuhao="+";

clear=false;

}

if(temp==jian)

{

qian=Double.parseDouble(text.getText());

fuhao="-";

clear=false;

;

}

if(temp==cheng)

{

qian=Double.parseDouble(text.getText());

fuhao="*";

clear=false;

}

if(temp==chu)

{

qian=Double.parseDouble(text.getText());

fuhao="/";

clear=false;

}

if(temp==deng)

{

double ss=Double.parseDouble(text.getText());

text.setText("");

if(fuhao=="+")

text.setText(qian+ss+"");

if(fuhao=="-")

text.setText(qian-ss+"");

if(fuhao=="*")

text.setText(qian*ss+"");

if(fuhao=="/")

text.setText(qian/ss+"");

clear=false;//要清空前一次的数据

;

}

if(temp==kai)

{

String s = text.getText();

if (s.charAt(0) == '-')

{

text.setText("负数不能开根号");

}

else

text.setText(Double.toString(java.lang.Math.sqrt(Double.parseDouble(text.getText()))));

clear=false;

}

if(temp==diao)

{

if (text.getText().charAt(0) == '0'text.getText().length() == 1)

{

text.setText("除数不能为零");

}

else

{

boolean isDec = true;

int i, j, k;

String s = Double.toString(1 / Double.parseDouble(text.getText()));

for (i = 0; i s.length(); i++)

if (s.charAt(i) == '.')

break;

for (j = i + 1; j s.length(); j++)

if (s.charAt(j) != '0')

{

isDec = false;

break;

}

if (isDec == true)

{

String stemp = "";

for (k = 0; k i; k++)

stemp += s.charAt(k);

text.setText(stemp);

}

else

text.setText(s);

}

clear=false;

}

if(temp==qiuyi)

{

text.setText("0");

clear=false;

}

if (temp == fu)

{ //导师，此方法参考书中例子

boolean isNumber = true;

String s = text.getText();

for (int i = 0; i s.length(); i++)

if (! (s.charAt(i) = '0' s.charAt(i) = '9' || s.charAt(i) == '.' ||

s.charAt(i) == '-'))

{

isNumber = false;

break;

}

if (isNumber == true)

{

//如果当前字符串首字母有'-'号,代表现在是个负数,再按下时,则将首符号去掉

if (s.charAt(0) == '-')

{

text.setText("");

for (int i = 1; i s.length(); i++)

{

char a = s.charAt(i);

text.setText(text.getText() + a);

}

}

//如果当前字符串第一个字符不是符号，则添加一个符号在首字母处

else

text.setText('-' + s);

}

}

}

catch(Exception eee)

{

System.out.println("运算时,首先输入数字或字符");

text.setText("运算出错");

clear=false;

}

}

class WindowDestroyer extends WindowAdapter

{//退出窗口动作

public void windowClosing(WindowEvent e)

{

System.exit(0);

}

}

class objConversion

{//导师,本进制类参考了CSMD类转换例子

public void objConversion ()

{

}

public String decDec (int decNum)

{//10

String strDecNum = Integer.toString(decNum);

for (int i = strDecNum.length(); i 3; i++)

{

strDecNum = "0" + strDecNum;

}

// return strDecNum;

return invert (strDecNum, 5);

}

public String decHex (int decNum)

{//10 to 16

String strHexNum = "";

int currentNum = 0;

while (decNum != 0)

{

if (decNum 15)

{

currentNum = decNum % 16;

decNum /= 16;

}

else

{

currentNum = decNum;

decNum = 0;

}

switch (currentNum)

{

case 15: strHexNum += "F";

break;

case 14: strHexNum += "E";

break;

case 13: strHexNum += "D";

break;

case 12: strHexNum += "C";

break;

case 11: strHexNum += "B";

break;

case 10: strHexNum += "A";

break;

default: strHexNum += Integer.toString(currentNum);

break;

}

}

return invert (strHexNum, 2);

}

public String decOct (int decNum)

{//10 to 8

String strOctNum = "";

while (decNum != 0)

{

if (decNum 7)

{

strOctNum += Integer.toString(decNum % 8);

decNum /= 8;

}

else

{

strOctNum += Integer.toString(decNum);

decNum = 0;

}

}

return invert (strOctNum, 3);

}

public String decBin (int decNum)

{//10 to 2

String strBinNum = "";

while (decNum != 0)

{

if (decNum 1)

{

strBinNum += Integer.toString(decNum % 2);

decNum /= 2;

}

else

{

strBinNum += Integer.toString(decNum);

decNum = 0;

}

}

return invert (strBinNum, 8);

}

private String invert (String strNum, int minLength) //转换长度

{

String answer = "";

int length = strNum.length();

if (length minLength)

{

for (int padding = (minLength - length); padding 0; padding--)

{

answer += "0";

}

}

for (int i = length; i 0; i--)

{

answer += strNum.charAt (i - 1);

}

return answer;

}

}

public static void main(String arg[])//产生窗口

{

calculator win = new calculator();

win.setVisible(true);

}

}

如何查看电脑上某程序的源代码 如计算器

可以通过GitHub源代码pingbai在计算机中检查计算器的源代码。具体操作方式如下：

1、进入GitHub的Microsoft个人问题主页，如下图所示。

2、搜索计算器，如下图所示。

3、进入计算器的项目主页，点击下载按钮下载源代码，如下图所示。

4、保存源压缩文件并用visual studio打开它。

扩展资料：

GitHub的Windows应用

GitHub 使用 git 分布式版本控制系统，而 git 最初是 LinusTorvalds 为帮助Linux开发而创造的，它针对的是 Linux 平台，因此 git 和 Windows 从来不是最好的朋友，因为它一点也不像 Windows。

GitHub 发布了GitHub for Windows，为 Windows 平台开发者提供了一个易于使用的 Git 图形客户端。

GitHub for Windows 是一个 Metro 风格应用程序，集成了自包含版本的 Git，bash 命令行 shell，PowerShell 的 posh-git 扩展。

GitHub 为 Windows 用户提供了一个基本的图形前端去处理大部分常用版本控制任务，可以创建版本库，向本地版本库递交补丁，在本地和远程版本库之间同步。微软也通过CodePlex向开发者提供 git 版本控制系统，而 GitHub 创造了一个更具有吸引力的 Windows 版本。

计算器源代码

using System;

using System.Drawing;

using System.Collections;

using System.ComponentModel;

using System.Windows.Forms;

using System.Data;

using System.Runtime.InteropServices;

using System.IO;

namespace 计算器

{

/// summary

/// Form1 的摘要说明。

/// /summary

public class Form1 : System.Windows.Forms.Form

{

private System.Windows.Forms.TextBox textBox1;

private System.Windows.Forms.Label label1;

private System.Windows.Forms.Button button1;

private System.Windows.Forms.Button button2;

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 button11;

private System.Windows.Forms.Button button12;

private System.Windows.Forms.Button button13;

private System.Windows.Forms.Button button14;

private System.Windows.Forms.Button button15;

private System.Windows.Forms.Button button16;

private System.Windows.Forms.Button button17;

private System.Windows.Forms.Button button10;

private System.Windows.Forms.Button button18;

private System.Windows.Forms.Button button19;

private AxWMPLib.AxWindowsMediaPlayer axWindowsMediaPlayer1;

private System.Windows.Forms.PictureBox pictureBox1;

private System.ComponentModel.Container components = null;

public Form1()

{

//

// Windows 窗体设计器支持所必需的

//

InitializeComponent();

//

// TODO: 在 InitializeComponent 调用后添加任何构造函数代码

//

}

/// summary

/// 清理所有正在使用的资源。

/// /summary

protected override void Dispose( bool disposing )

{

if( disposing )

{

if (components != null)

{

components.Dispose();

}

}

base.Dispose( disposing );

}

#region Windows 窗体设计器生成的代码

/// summary

/// 设计器支持所需的方法 - 不要使用代码编辑器修改

/// 此方法的内容。

/// /summary

private void InitializeComponent()

{

System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(Form1));

this.textBox1 = new System.Windows.Forms.TextBox();

this.label1 = new System.Windows.Forms.Label();

this.button1 = new System.Windows.Forms.Button();

this.button2 = 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.button11 = new System.Windows.Forms.Button();

this.button12 = new System.Windows.Forms.Button();

this.button13 = new System.Windows.Forms.Button();

this.button14 = new System.Windows.Forms.Button();

this.button15 = new System.Windows.Forms.Button();

this.button16 = new System.Windows.Forms.Button();

this.button17 = new System.Windows.Forms.Button();

this.button10 = new System.Windows.Forms.Button();

this.button18 = new System.Windows.Forms.Button();

this.button19 = new System.Windows.Forms.Button();

this.axWindowsMediaPlayer1 = new AxWMPLib.AxWindowsMediaPlayer();

this.pictureBox1 = new System.Windows.Forms.PictureBox();

((System.ComponentModel.ISupportInitialize)(this.axWindowsMediaPlayer1)).BeginInit();

this.SuspendLayout();

//

// textBox1

//

this.textBox1.Location = new System.Drawing.Point(112, 32);

this.textBox1.Name = "textBox1";

this.textBox1.Size = new System.Drawing.Size(240, 29);

this.textBox1.TabIndex = 0;

this.textBox1.Text = "";

//

// label1

//

this.label1.Font = new System.Drawing.Font("楷体_GB2312", 15F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));

this.label1.Location = new System.Drawing.Point(24, 40);

this.label1.Name = "label1";

this.label1.Size = new System.Drawing.Size(72, 40);

this.label1.TabIndex = 1;

this.label1.Text = "结果";

//

// button1

//

this.button1.Location = new System.Drawing.Point(24, 168);

this.button1.Name = "button1";

this.button1.Size = new System.Drawing.Size(40, 32);

this.button1.TabIndex = 3;

this.button1.Text = "1";

this.button1.Click += new System.EventHandler(this.button1_Click);

//

// button2

//

this.button2.Location = new System.Drawing.Point(88, 168);

this.button2.Name = "button2";

this.button2.Size = new System.Drawing.Size(40, 32);

this.button2.TabIndex = 4;

this.button2.Text = "2";

this.button2.Click += new System.EventHandler(this.button2_Click);

//

// button3

//

this.button3.Location = new System.Drawing.Point(152, 168);

this.button3.Name = "button3";

this.button3.Size = new System.Drawing.Size(40, 32);

this.button3.TabIndex = 5;

this.button3.Text = "3";

this.button3.Click += new System.EventHandler(this.button3_Click);

//

// button4

//

this.button4.Location = new System.Drawing.Point(24, 216);

this.button4.Name = "button4";

this.button4.Size = new System.Drawing.Size(40, 32);

this.button4.TabIndex = 6;

this.button4.Text = "4";

this.button4.Click += new System.EventHandler(this.button4_Click);

//

// button5

//

this.button5.Location = new System.Drawing.Point(88, 216);

this.button5.Name = "button5";

this.button5.Size = new System.Drawing.Size(40, 32);

this.button5.TabIndex = 7;

this.button5.Text = "5";

this.button5.Click += new System.EventHandler(this.button5_Click);

//

// button6

//

this.button6.Location = new System.Drawing.Point(152, 216);

this.button6.Name = "button6";

this.button6.Size = new System.Drawing.Size(40, 32);

this.button6.TabIndex = 8;

this.button6.Text = "6";

this.button6.Click += new System.EventHandler(this.button6_Click);

//

// button7

//

this.button7.Location = new System.Drawing.Point(24, 264);

this.button7.Name = "button7";

this.button7.Size = new System.Drawing.Size(40, 32);

this.button7.TabIndex = 9;

this.button7.Text = "7";

this.button7.Click += new System.EventHandler(this.button7_Click);

//

// button8

//

this.button8.Location = new System.Drawing.Point(88, 264);

this.button8.Name = "button8";

this.button8.Size = new System.Drawing.Size(40, 32);

this.button8.TabIndex = 10;

this.button8.Text = "8";

this.button8.Click += new System.EventHandler(this.button8_Click);

//

// button9

//

this.button9.Location = new System.Drawing.Point(152, 264);

this.button9.Name = "button9";

this.button9.Size = new System.Drawing.Size(40, 32);

this.button9.TabIndex = 11;

this.button9.Text = "9";

this.button9.Click += new System.EventHandler(this.button9_Click);

//

// button11

//

this.button11.Location = new System.Drawing.Point(152, 320);

this.button11.Name = "button11";

this.button11.Size = new System.Drawing.Size(40, 32);

this.button11.TabIndex = 13;

this.button11.Text = "=";

this.button11.Click += new System.EventHandler(this.button11_Click);

//

// button12

//

this.button12.Location = new System.Drawing.Point(152, 120);

this.button12.Name = "button12";

this.button12.Size = new System.Drawing.Size(40, 32);

this.button12.TabIndex = 14;

this.button12.Text = "/";

this.button12.Click += new System.EventHandler(this.button12_Click);

//

// button13

//

this.button13.Location = new System.Drawing.Point(208, 120);

this.button13.Name = "button13";

this.button13.Size = new System.Drawing.Size(40, 32);

this.button13.TabIndex = 15;

this.button13.Text = "*";

this.button13.Click += new System.EventHandler(this.button13_Click);

//

// button14

//

this.button14.Location = new System.Drawing.Point(208, 168);

this.button14.Name = "button14";

this.button14.Size = new System.Drawing.Size(40, 32);

this.button14.TabIndex = 16;

this.button14.Text = "-";

this.button14.Click += new System.EventHandler(this.button14_Click);

//

// button15

//

this.button15.Location = new System.Drawing.Point(208, 216);

this.button15.Name = "button15";

this.button15.Size = new System.Drawing.Size(40, 32);

this.button15.TabIndex = 17;

this.button15.Text = "+";

this.button15.Click += new System.EventHandler(this.button15_Click);

//

// button16

//

this.button16.Location = new System.Drawing.Point(24, 120);

this.button16.Name = "button16";

this.button16.Size = new System.Drawing.Size(104, 32);

this.button16.TabIndex = 18;

this.button16.Text = "播放音乐";

this.button16.Click += new System.EventHandler(this.button16_Click);

//

// button17

//

this.button17.Location = new System.Drawing.Point(208, 264);

this.button17.Name = "button17";

this.button17.Size = new System.Drawing.Size(40, 88);

this.button17.TabIndex = 19;

this.button17.Text = "C";

this.button17.Click += new System.EventHandler(this.button17_Click);

//

// button10

//

this.button10.Location = new System.Drawing.Point(24, 320);

this.button10.Name = "button10";

this.button10.Size = new System.Drawing.Size(56, 32);

this.button10.TabIndex = 20;

this.button10.Text = "0";

this.button10.Click += new System.EventHandler(this.button10_Click);

//

// button18

//

this.button18.Location = new System.Drawing.Point(304, 312);

this.button18.Name = "button18";

this.button18.Size = new System.Drawing.Size(80, 40);

this.button18.TabIndex = 21;

this.button18.Text = "关闭";

this.button18.Click += new System.EventHandler(this.button18_Click);

//

// button19

//

this.button19.Location = new System.Drawing.Point(88, 320);

this.button19.Name = "button19";

this.button19.Size = new System.Drawing.Size(40, 32);

this.button19.TabIndex = 24;

this.button19.Text = ".";

this.button19.Click += new System.EventHandler(this.button19_Click);

//

// axWindowsMediaPlayer1

//

this.axWindowsMediaPlayer1.Enabled = true;

this.axWindowsMediaPlayer1.Location = new System.Drawing.Point(272, 80);

this.axWindowsMediaPlayer1.Name = "axWindowsMediaPlayer1";

this.axWindowsMediaPlayer1.OcxState = ((System.Windows.Forms.AxHost.State)(resources.GetObject("axWindowsMediaPlayer1.OcxState")));

this.axWindowsMediaPlayer1.Size = new System.Drawing.Size(112, 168);

this.axWindowsMediaPlayer1.TabIndex = 25;

this.axWindowsMediaPlayer1.Enter += new System.EventHandler(this.axWindowsMediaPlayer1_Enter);

//

// pictureBox1

//

this.pictureBox1.BackgroundImage = ((System.Drawing.Image)(resources.GetObject("pictureBox1.BackgroundImage")));

this.pictureBox1.Location = new System.Drawing.Point(272, 184);

this.pictureBox1.Name = "pictureBox1";

this.pictureBox1.Size = new System.Drawing.Size(112, 104);

this.pictureBox1.TabIndex = 28;

this.pictureBox1.TabStop = false;

//

// Form1

//

this.AutoScaleBaseSize = new System.Drawing.Size(10, 22);

this.BackColor = System.Drawing.SystemColors.Control;

this.ClientSize = new System.Drawing.Size(408, 398);

this.Controls.Add(this.pictureBox1);

this.Controls.Add(this.axWindowsMediaPlayer1);

this.Controls.Add(this.button19);

this.Controls.Add(this.button18);

this.Controls.Add(this.button10);

this.Controls.Add(this.button17);

this.Controls.Add(this.button16);

this.Controls.Add(this.button15);

this.Controls.Add(this.button14);

this.Controls.Add(this.button13);

this.Controls.Add(this.button12);

this.Controls.Add(this.button11);

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.button2);

this.Controls.Add(this.button1);

this.Controls.Add(this.label1);

this.Controls.Add(this.textBox1);

this.Font = new System.Drawing.Font("楷体_GB2312", 14.25F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));

this.Name = "Form1";

this.Text = "计算器";

((System.ComponentModel.ISupportInitialize)(this.axWindowsMediaPlayer1)).EndInit();

this.ResumeLayout(false);

}

#endregion

/// summary

/// 应用程序的主入口点。

/// /summary

[STAThread]

static void Main()

{

Application.Run(new Form1());

}

private void button1_Click(object sender, System.EventArgs e)

{

Button btn=(Button)sender;

textBox1.Text+=btn.Text;

}

private void button2_Click(object sender, System.EventArgs e)

{

Button btn=(Button)sender;

textBox1.Text+=btn.Text;

}

private void button3_Click(object sender, System.EventArgs e)

{

Button btn=(Button)sender;

textBox1.Text+=btn.Text;

}

private void button4_Click(object sender, System.EventArgs e)

{

Button btn=(Button)sender;

textBox1.Text+=btn.Text;

}

private void button5_Click(object sender, System.EventArgs e)

{

Button btn=(Button)sender;

textBox1.Text+=btn.Text;

}

private void button6_Click(object sender, System.EventArgs e)

{

Button btn=(Button)sender;

textBox1.Text+=btn.Text;

}

private void button7_Click(object sender, System.EventArgs e)

{

Button btn=(Button)sender;

textBox1.Text+=btn.Text;

}

private void button8_Click(object sender, System.EventArgs e)

{

Button btn=(Button)sender;

textBox1.Text+=btn.Text;

}

private void button9_Click(object sender, System.EventArgs e)

{

Button btn=(Button)sender;

textBox1.Text+=btn.Text;

}

private void button10_Click(object sender, System.EventArgs e)

{

Button btn=(Button)sender;

textBox1.Text+=btn.Text;

}

private void button19_Click(object sender, System.EventArgs e)

{

Button btn=(Button)sender;

textBox1.Text+=btn.Text;

}

private void button12_Click(object sender, System.EventArgs e)

{

Button btn=(Button)sender;

textBox1.Text=textBox1.Text+" "+btn.Text+" ";

}

private void button13_Click(object sender, System.EventArgs e)

{

Button btn=(Button)sender;

textBox1.Text=textBox1.Text+" "+btn.Text+" ";

}

private void button14_Click(object sender, System.EventArgs e)

{

Button btn=(Button)sender;

textBox1.Text=textBox1.Text+" "+btn.Text+" ";

}

private void button15_Click(object sender, System.EventArgs e)

{

Button btn=(Button)sender;

textBox1.Text=textBox1.Text+" "+btn.Text+" ";

}

private void button16_Click(object sender, System.EventArgs e)

{

FileDialog ofDialog=new OpenFileDialog();

ofDialog.AddExtension=true;

ofDialog.CheckFileExists=true;

ofDialog.CheckPathExists=true;

ofDialog.Filter="VCD文件(*.dat)|*.dat|Audio文件(*.avi)|*.avi|WAV文件(*.wav)|*.wav|MP3文件(*.mp3)|*.mp3|所有文件(*.*)|*.*";

ofDialog.FilterIndex=4;

if(ofDialog.ShowDialog()==DialogResult.OK)

{

this.axWindowsMediaPlayer1.URL=ofDialog.FileName;

}

}

private void button17_Click(object sender, System.EventArgs e)

{

textBox1.Text="";

}

private void button18_Click(object sender, System.EventArgs e)

{

Application.Exit();

}

private void button11_Click(object sender,System.EventArgs e)

{

Single r=0;

string t=textBox1.Text;

int space = t.IndexOf(' ');

string S1=t.Substring(0,space);

char op=Convert.ToChar(t.Substring(space+1,1));

string S2=t.Substring(space+3);

Single arg1=Convert.ToSingle(S1);

Single arg2=Convert.ToSingle(S2);

switch(op)

{

case '+':

r=arg1+arg2;

break;

case '-':

r=arg1-arg2;

break;

case '*':

r=arg1*arg2;

break;

case '/':

if(arg2==0)

textBox1.Text="error!";

else

r=arg1/arg2;

break;

}

textBox1.Text=r.ToString();

}

private void axWindowsMediaPlayer1_Enter(object sender, System.EventArgs e)

{

}

}

}

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