一个简单的计算器，在此编程当中不断的制造和解决问题；

import flash.events.MouseEvent;
var zhiQianshu:String;
var jiaboo:Boolean=false;
var jianboo:Boolean=false;
var chengboo:Boolean=false;
var chuboo:Boolean=false;

mc1_btn.addEventListener(MouseEvent.CLICK,onMc1_btnClickHandler);
function onMc1_btnClickHandler(e:MouseEvent)
{
if(qingkongboo==true)//按过等于之后再次计算，按任意键赋值，并把之前的数清空；
{
input_txt.text="";
qingkongboo=false;

}
input_txt.appendText("1");
}

mc2_btn.addEventListener(MouseEvent.CLICK,onMc2_btnClickHandler);
function onMc2_btnClickHandler(e:MouseEvent)
{
if(qingkongboo==true)//按过等于之后再次计算，按任意键赋值，并把之前的数清空；
{
input_txt.text="";
qingkongboo=false;

}
input_txt.appendText("2");

}

mc3_btn.addEventListener(MouseEvent.CLICK,onMc3_btnClickHandler);
function onMc3_btnClickHandler(e:MouseEvent)
{
if(qingkongboo==true)//按过等于之后再次计算，按任意键赋值，并把之前的数清空；
{
input_txt.text="";
qingkongboo=false;

}
input_txt.appendText("3");
}

mc4_btn.addEventListener(MouseEvent.CLICK,onMc4_btnClickHandler);
function onMc4_btnClickHandler(e:MouseEvent)
{
if(qingkongboo==true)//按过等于之后再次计算，按任意键赋值，并把之前的数清空；
{
input_txt.text="";
qingkongboo=false;

}
input_txt.appendText("4");
}

mc5_btn.addEventListener(MouseEvent.CLICK,onMc5_btnClickHandler);
function onMc5_btnClickHandler(e:MouseEvent)
{
if(qingkongboo==true)//按过等于之后再次计算，按任意键赋值，并把之前的数清空；
{
input_txt.text="";
qingkongboo=false;

}
input_txt.appendText("5");
}

mc6_btn.addEventListener(MouseEvent.CLICK,onMc6_btnClickHandler);
function onMc6_btnClickHandler(e:MouseEvent)
{
if(qingkongboo==true)//按过等于之后再次计算，按任意键赋值，并把之前的数清空；
{
input_txt.text="";
qingkongboo=false;

}
input_txt.appendText("6");
}

mc7_btn.addEventListener(MouseEvent.CLICK,onMc7_btnClickHandler);
function onMc7_btnClickHandler(e:MouseEvent)
{
if(qingkongboo==true)//按过等于之后再次计算，按任意键赋值，并把之前的数清空；
{
input_txt.text="";
qingkongboo=false;

}
input_txt.appendText("7");
}

mc8_btn.addEventListener(MouseEvent.CLICK,onMc8_btnClickHandler);
function onMc8_btnClickHandler(e:MouseEvent)
{
if(qingkongboo==true)//按过等于之后再次计算，按任意键赋值，并把之前的数清空；
{
input_txt.text="";
qingkongboo=false;

}
input_txt.appendText("8");
}

mc9_btn.addEventListener(MouseEvent.CLICK,onMc9_btnClickHandler);
function onMc9_btnClickHandler(e:MouseEvent)
{
if(qingkongboo==true)//按过等于之后再次计算，按任意键赋值，并把之前的数清空；
{
input_txt.text="";
qingkongboo=false;

}
input_txt.appendText("9");
}

mc0_btn.addEventListener(MouseEvent.CLICK,onMc0_btnClickHandler);
function onMc0_btnClickHandler(e:MouseEvent)
{
if(qingkongboo==true)//按过等于之后再次计算，按任意键赋值，并把之前的数清空；
{
input_txt.text="";
qingkongboo=false;

}
input_txt.appendText("0");
}

Dian_btn.addEventListener(MouseEvent.CLICK,onDian_btnClickHandler);
function onDian_btnClickHandler(e:MouseEvent)
{
if(qingkongboo==true)//按过等于之后再次计算，按任意键赋值，并把之前的数清空；
{
input_txt.text="";
qingkongboo=false;

}
input_txt.appendText(".");
}

inset_btn.addEventListener(MouseEvent.CLICK,onInset_btnClickHandler);
function onInset_btnClickHandler(e:MouseEvent)
{
input_txt.text="";
}

Jia_btn.addEventListener(MouseEvent.CLICK,onJia_btnClickHandler);
function onJia_btnClickHandler(e:MouseEvent)
{

if(jiaboo==true)//实现连加
{

input_txt.text=String(Number(zhiQianshu)+Number(input_txt.text));
jiaboo=false;
}
zhiQianshu=input_txt.text;
//trace(zhiQianshu);
input_txt.text="";
jiaboo=true;
}

Jian_btn.addEventListener(MouseEvent.CLICK,onJian_btnClickHandler);
function onJian_btnClickHandler(e:MouseEvent)
{
if(jianboo==true)//实现连减
{

input_txt.text=String(Number(zhiQianshu)-Number(input_txt.text));
zhiQianshu=input_txt.text;
jianboo=false;
}

zhiQianshu=input_txt.text;

input_txt.text="";
jianboo=true;

}

Cheng_btn.addEventListener(MouseEvent.CLICK,onCheng_btnClickHandler);
function onCheng_btnClickHandler(e:MouseEvent)
{
if(chengboo==true)//实现连乘
{

input_txt.text=String(Number(zhiQianshu)*Number(input_txt.text));
chengboo=false;
}
zhiQianshu=input_txt.text;
input_txt.text="";
chengboo=true;
}

Chu_btn.addEventListener(MouseEvent.CLICK,onChu_btnClickHandler);
function onChu_btnClickHandler(e:MouseEvent)
{
if(chuboo==true)//实现连除
{

input_txt.text=String(Number(zhiQianshu)/Number(input_txt.text));
chuboo=false;
}
zhiQianshu=input_txt.text;
input_txt.text="";
chuboo=true;
}

var qingkongboo:Boolean=false;
Enter_btn.addEventListener(MouseEvent.CLICK,onEnter_btnClickHandler);
function onEnter_btnClickHandler(e:MouseEvent)
{
if(jiaboo==true)
{

input_txt.text=String(Number(zhiQianshu)+Number(input_txt.text));
jiaboo=false;

}
if(jianboo==true)
{
input_txt.text=String(Number(zhiQianshu)-Number(input_txt.text));
jianboo=false;

}
if(chengboo==true)
{
input_txt.text=String(Number(zhiQianshu)*Number(input_txt.text));
chengboo=false;

}
if(chuboo==true)
{
input_txt.text=String(Number(zhiQianshu)/Number(input_txt.text));
chuboo=false;

}
qingkongboo=true;
}