C++ Program to calculate area of circle and rectangle

#include<iostream.h>
#include<conio.h>
float circle(int r);
int rectangle(int l,int b);
void main()
{
clrscr();
int radius,length,breath,acir,arect;
cout<<"enter radius"<<endl;
cin>>radius;
acir=circle(radius);
cout<<"enter length and breath  "<<endl;
cin>>length>>breath;
arect=rectangle(length,breath);
cout<<" area of circle  "<<acir;
cout<<" area of rectangle  "<<arect;
getch();
}
float circle(int r)
{
return(3.14*r*r);
}
int rectangle(int l,int b)
{
return(l*b);
}