#definepi3.1415926;
classEllipse
{
inta,b;
public:
Ellipse()
{
cout<<"请输入坐标（a，b）";
cin>>a>>b;
}
doublearea()
{
if(a<0)
a=-a;
if(b<0)
b=-b;
returnpi*a*b;
}
};
voidmain()
{
Ellipsee1;
cout<
C++..C++啊！设计名为Ellipse的椭圆类。谢谢
#include
#definepi3.1415926;
classEllipse
{
inta,b;
public:
Ellipse()
{
cout<<"请输入坐标（a，b）";
cin>>a>>b;
}
doublearea()
{
if(a<0)
a=-a;
if(b<0)
b=-b;
returnpi*a*b;
}
};
voidmain()
{
Ellipsee1;
cout<
#definepi3.1415926;
classEllipse
{
inta,b;
public:
Ellipse()
{
cout<<"请输入坐标（a，b）";
cin>>a>>b;
}
doublearea()
{
if(a<0)
a=-a;
if(b<0)
b=-b;
returnpi*a*b;
}
};
voidmain()
{
Ellipsee1;
cout<
