怎么用c#编写一道用正方行类。四边都一样只用一个宽de属性，单参构造函数，二个方法计算周长和面积

class zhengfangxing
{
private int bianchang;
public zhengfangxing(int bc)
{
   this.biangchang=bc;
}
public int zhouchang()
{
return bianchang*4;
}
public int mianji()
{
return bianchang*bianchang;
}
}

同意2楼版主的写法,只是LZ说的一个属性,二个方法和单参构造函数,所以在版主的基础上修改如下:
class zhengfangxing
{
private int _bianchang;
public zhengfangxing(int bc)
{
   _bianchang=bc;
}
public int bianchange
{
   get{return _bianchang;}
   set{_bianchang=value;}
}
public int zhouchang()
{
return bianchang*4;
}
public int mianji()
{
return bianchang*bianchang;
}
}

不好意思,忘记了修改变量名了,再修改如下:
class zhengfangxing
{
private int _bianchang;
public zhengfangxing(int bc)
{
   _bianchang=bc;
}
public int bianchange
{
   get{return _bianchang;}
   set{_bianchang=value;}
}
public int zhouchang()
{
   return _bianchang * 4;
}
public int mianji()
{
   return _bianchang * _bianchang;
}
}