本文实例讲述了c#实现简单的计算器功能。分享给大家供大家参考，具体如下：
using system;
using system.collections.generic;
using system测试数据ponentmodel;
using system.data;
using system.drawing;
using system.linq;
using system.text;
using system.windows.forms;
using system.collections;
using system.threading;
using system.diagnostics;
namespace calculator
{
public partial class form1 : form
{
public form1()
{
initializecomponent();
}
private string _sign;
private double _first = 10241024;
private double _second = 10241024;
private string _number;
private void button1_click( object sender, eventargs e)
{
_number += "1" ;
this .textbox1.text += "1" ;
}
private void button2_click( object sender, eventargs e)
{
_number += "2" ;
this .textbox1.text += "2" ;
}
private void button3_click( object sender, eventargs e)
{
_number += "3" ;
this .textbox1.text += "3" ;
}
private void button4_click( object sender, eventargs e)
{
_number += "4" ;
this .textbox1.text += "4" ;
}
private void button8_click( object sender, eventargs e)
{
_number += "5" ;
this .textbox1.text += "5" ;
}
private void button7_click( object sender, eventargs e)
{
_number += "6" ;
this .textbox1.text += "6" ;
}
private void button6_click( object sender, eventargs e)
{
_number += "7" ;
this .textbox1.text += "7" ;
}
private void button5_click( object sender, eventargs e)
{
_number += "8" ;
this .textbox1.text += "8" ;
}
private void button9_click( object sender, eventargs e)
{
_number += "9" ;
this .textbox1.text += "9" ;
}
private void button10_click( object sender, eventargs e)
{
_number += "0" ;
this .textbox1.text += "0" ;
}
private void button16_click( object sender, eventargs e)
{
//设置加号计算数
setnumber(convert.todouble(_number));
if (_sign == null || _second == 10241024)
{
_sign = "+" ;
this .textbox1.text += "+" ;
return ;
}
if (_second != 10241024)
{
//开始进行计算
computer compro = new computer(_sign, _first, _second);
this .textbox1.text = compro测试数据t( out _first).tostring();
//验证除数为零的情况
if (_first == 10241024.10241023)
{
this .textbox1.text = "0" ;
messagebox.show( "除数不能为零！" );
_number = null ;
_first = 10241024;
_second = 10241024;
this .textbox1.text = null ;
_sign = null ;
this .textbox1.text = null ;
}
//开始初始化数据
_sign = "+" ;
this .textbox1.text += "+" ;
_second = 10241024;
_number = null ;
return ;
}
}
private void button15_click( object sender, eventargs e)
{
//设置减号计算数
setnumber(convert.todouble(_number));
if (_sign == null || _second == 10241024)
{
_sign = "-" ;
this .textbox1.text += "-" ;
return ;
}
if (_second != 10241024)
{
//开始进行计算
computer compro = new computer(_sign, _first, _second);
this .textbox1.text = compro测试数据t( out _first).tostring();
//验证除数为零的情况
if (_first == 10241024.10241023)
{
this .textbox1.text = "0" ;
messagebox.show( "除数不能为零！" );
_number = null ;
_first = 10241024;
_second = 10241024;
this .textbox1.text = null ;
_sign = null ;
this .textbox1.text = null ;
}
//开始初始化数据
_sign = "-" ;
this .textbox1.text += "-" ;
_second = 10241024;
_number = null ;
return ;
}
}
private void button14_click( object sender, eventargs e)
{
//设置乘号计算数
setnumber(convert.todouble(_number));
if (_sign == null || _second == 10241024)
{
_sign = "*" ;
this .textbox1.text += "*" ;
return ;
}
if (_second != 10241024)
{
//开始进行计算
computer compro = new computer(_sign, _first, _second);
this .textbox1.text = compro测试数据t( out _first).tostring();
//验证除数为零的情况
if (_first == 10241024.10241023)
{
this .textbox1.text = "0" ;
messagebox.show( "除数不能为零！" );
_number = null ;
_first = 10241024;
_second = 10241024;
this .textbox1.text = null ;
_sign = null ;
this .textbox1.text = null ;
}
//开始初始化数据
_sign = "*" ;
this .textbox1.text += "*" ;
_second = 10241024;
_number = null ;
return ;
}
}
/// <summary>
/// 设置除号计算数
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void button11_click( object sender, eventargs e)
{
setnumber(convert.todouble(_number));
if (_sign == null || _second == 10241024)
{
_sign = "/" ;
this .textbox1.text += "/" ;
return ;
}
if (_second != 10241024)
{
//开始进行计算
computer compro = new computer(_sign, _first, _second);
this .textbox1.text = compro测试数据t( out _first).tostring();
//验证除数为零的情况
if (_first == 10241024.10241023)
{
this .textbox1.text = "0" ;
this .textbox1.text = "除数不能为零！" ;
_number = null ;
_first = 10241024;
_second = 10241024;
this .textbox1.text = null ;
_sign = null ;
this .textbox1.text = null ;
}
//开始初始化数据
_sign = "/" ;
this .textbox1.text += "/" ;
_second = 10241024;
_number = null ;
return ;
}
}
/// <summary>
/// 清空输入框
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void button12_click( object sender, eventargs e)
{
_number = null ;
_first = 10241024;
_second = 10241024;
this .textbox1.text = null ;
_sign = null ;
this .textbox1.text = null ;
}
private void button13_click( object sender, eventargs e)
{
setnumber(convert.todouble(_number));
//判断是否设置了_second的值
if (_second == 10241024)
{
_second = convert.todouble(_number);
_number = null ;
}
//判断是否设置了_first的值
if (_first == 10241024)
{
_first = convert.todouble(_number);
_number = null ;
}
//判断是否有_sign的值
if (_sign == null )
{
_sign = "+" ;
}
//开始进行计算
computer compro = new computer(_sign, _first, _second);
this .textbox1.text = compro测试数据t( out _first).tostring();
//验证除数为零的情况
if (_first == 10241024.10241023)
{
this .textbox1.text = "0" ;
messagebox.show( "除数不能为零！" );
_number = null ;
_first = 10241024;
_second = 10241024;
this .textbox1.text = null ;
_sign = null ;
this .textbox1.text = null ;
}
//开始初始化数据
_sign = null ;
_second = 10241024;
_number = null ;
}
public class computer
{
private string _sign;
private double _first;
private double _second;
public computer( string str, double first, double second)
{
_sign = str;
_first = first;
_second = second;
}
//选择相应的运算符进行运算
public double comt( out double first)
{
if (_sign == "+" )
{
first = _first + _second;
return _first + _second;
}
else if (_sign == "-" )
{
first = _first - _second;
return _first - _second;
}
else if (_sign == "*" )
{
first = _first * _second;
return _first * _second;
}
else if (_sign == "/" )
{
if (_second == 0)
{
first = 10241024.10241023;
return 10241024.10241023;
}
else
{
first = _first / _second;
return _first / _second;
}
}
else
{
first = 10241024.10241024;
return 10241024.10241024;
}
}
}
//设置数字函数
public void setnumber( double number)
{
if (_first == 10241024 && _number != null )
{
_first = convert.todouble(_number);
_number = null ;
}
else if (_second == 10241024 && _number != null )
{
_second = convert.todouble(_number);
_number = null ;
}
}
private void timer1_tick( object sender, eventargs e)
{
this .label2.text = datetime.now.tostring();
}
private void button24_click( object sender, eventargs e)
{
if ( this .textbox1.text == " " )
{
messagebox.show( "请输入数据" );
this .textbox1.text = convert.toint64(textbox1.text.tostring(), 2).tostring();
}
else
{
this .textbox1.text = convert.toint64(textbox1.text.tostring(), 2).tostring();
}
}
private void button22_click( object sender, eventargs e)
{
if ( this .textbox1.text == " " )
{
messagebox.show( "请输入数据" );
int64 int64 = convert.toint64(textbox1.text.tostring(), 2);
this .textbox1.text = convert.tostring(int64,16);
}
else
{
int64 int64 = convert.toint64(textbox1.text.tostring(), 2);
this .textbox1.text = convert.tostring(int64, 16);
}
}
private void button23_click( object sender, eventargs e)
{
if ( this .textbox1.text == " " )
{
messagebox.show( "请输入数据" );
int64 int64 = convert.toint64(textbox1.text.tostring(), 2);
this .textbox1.text = convert.tostring(int64, 8);
}
else
{
int64 int64 = convert.toint64(textbox1.text.tostring(), 2);
this .textbox1.text = convert.tostring(int64, 8);
}
}
private void button21_click( object sender, eventargs e)
{
if ( this .textbox1.text == " " )
{
messagebox.show( "请输入数据" );
int64 int64 = convert.toint64(textbox1.text);
this .textbox1.text = convert.tostring(int64, 2);
}
else
{
int64 int64 = convert.toint64(textbox1.text);
this .textbox1.text = convert.tostring(int64, 2);
}
}
private void button27_click( object sender, eventargs e)
{
double buffer1= convert.todouble(textbox1.text);
buffer1 = 1 / buffer1;
this .textbox1.text = buffer1.tostring();
}
private void button17_click( object sender, eventargs e)
{
_number += "." ;
this .textbox1.text += "." ;
}
private void button25_click( object sender, eventargs e)
{
double buffer1 = convert.todouble(textbox1.text);
buffer1 = buffer1 * buffer1;
this .textbox1.text = buffer1.tostring();
}
private void button26_click( object sender, eventargs e)
{
if ( this .textbox1.text == " " )
{
messagebox.show( "请输入数据" );
int64 int64 = convert.toint64( this .textbox1.text);
int64 temp1 = 1;
while (int64 > 1)
{
temp1 = temp1*int64 ;
int64--;
}
this .textbox1.text = temp1.tostring();
}
else
{
int64 int64 = convert.toint64( this .textbox1.text);
int64 temp1 = 1;
while (int64 > 1)
{
temp1 = temp1 * int64;
int64--;
}
this .textbox1.text = temp1.tostring();
}
}
private void button28_click( object sender, eventargs e)
{
//int64 int64 = convert.toint64(this.textbox1.text);
//double temp=math.log10(int64);
//this.textbox1.text = temp.tostring();
double temp1, temp2;
string [] strarry = new string [2];
strarry = this .textbox1.text.split( '.' );
temp1 = convert.todouble(strarry[0]);
temp2 = convert.todouble(strarry[1]);
// double temp1 = convert.todouble(this.textbox1.text);
temp2 = math.log(temp2,temp1 );
this .textbox1.text = temp2.tostring();
}
private void button18_click( object sender, eventargs e)
{
double temp1 = convert.todouble( this .textbox1.text);
double temp2 = math.sin(temp1);
this .textbox1.text = temp2.tostring();
}
private void button19_click( object sender, eventargs e)
{
double temp1 = convert.todouble( this .textbox1.text);
double temp2 = math.cos(temp1);
this .textbox1.text = temp2.tostring();
}
private void button20_click( object sender, eventargs e)
{
double temp1 = convert.todouble( this .textbox1.text);
double temp2 = math.tan(temp1);
this .textbox1.text = temp2.tostring();
}
private void button33_click( object sender, eventargs e)
{
double temp1, temp2;
string [] strarry= new string [2];
strarry= this .textbox1.text.split( '.' );
temp1 = convert.todouble(strarry[0]);
temp2 = convert.todouble(strarry[1]);
// double temp1 = convert.todouble(this.textbox1.text);
temp2 = math.pow(temp1,temp2);
this .textbox1.text = temp2.tostring();
}
/// <summary>
/// 计算e的temp1次幂
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void button31_click( object sender, eventargs e)
{
double temp1 = convert.todouble( this .textbox1.text);
double temp2 = math.exp(temp1);
this .textbox1.text = temp2.tostring();
}
private void button34_click( object sender, eventargs e)
{
double temp1 = convert.todouble( this .textbox1.text);
double temp2 = math.sqrt(temp1);
this .textbox1.text = temp2.tostring();
}
private void button32_click( object sender, eventargs e)
{
double temp1, temp2;
string [] strarry = new string [2];
strarry = this .textbox1.text.split( '.' );
temp1 = convert.todouble(strarry[0]);
temp2 = convert.todouble(strarry[1]);
// double temp1 = convert.todouble(this.textbox1.text);
temp2 = math.ieeeremainder(temp1, temp2);
this .textbox1.text = temp2.tostring();
}
/// <summary>
/// 圆的面积
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void button30_click( object sender, eventargs e)
{
double buffer1 = convert.todouble(textbox1.text);
buffer1 =3.1415926*buffer1*buffer1;
this .textbox1.text = buffer1.tostring();
}
/// <summary>
/// 三角形面积
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void button29_click( object sender, eventargs e)
{
double temp1, temp2,temp3,p,area;
string [] strarry = new string [3];
strarry = this .textbox1.text.split( '.' );
temp1 = convert.todouble(strarry[0]);
temp2 = convert.todouble(strarry[1]);
temp3 = convert.todouble(strarry[2]);
// double temp1 = convert.todouble(this.textbox1.text);
p = (temp1 + temp2 + temp3) / 2;
area= p * (p - temp1) * (p - temp2) * (p - temp3);
area = math.sqrt(area);
this .textbox1.text = area.tostring();
}
private void linklabel1_linkclicked( object sender, linklabellinkclickedeventargs e)
{
string str = e.link.tostring();
process.start(str);
}
private void form1_load( object sender, eventargs e)
{
}
}
}
运行效果：
希望本文所述对大家c#程序设计有所帮助。
原文链接：http://blog.csdn.net/microzone/article/details/16904057
dy("nrwz");
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