C++ Class program ,which calculates area and circumference of circle.

#include<iostream>

using namespace std;
class circle
{int radius;
public:
void setradius()
{cout<<"enter radius=";
cin>>radius;
}
int getdia()
{int d;
cout<<"diameter="<<2*radius<<endl;
}
double getarea()
{double x;
x=3.14*radius*radius;
cout<<"area="<<x<<endl;
}
double getcir()

{double cir;
cir=2*3.14*radius;
cout<<"circumference="<<cir;
}

};
int main()
{circle c;
c.setradius();
cout<<endl;
c.getdia();
cout<<endl;
c.getarea();
cout<<endl;
c.getcir();
return 0;
}