Write A C++ Program By Using Member Functions Outside The Body Of Class To Find Area Of Rectangle.

#include<iostream.h> 
 #include<conio.h> 
 class rectangle 
 { 
      private: 
      int m,n; 
      public: 
      void setdata(int,int); 
      void area(); 
 }; 
               void rectangle::setdata(int u,int v) 
           { 
                  m=u; 
                  n=v;            
           } 
                void rectangle::area() 
          { 
                 int a=m*n; 
                 cout<<"\nArea of Rectangle= "<<a; 
          } 
                void main() 
     { 
                 clrscr(); 
                 rectangle f,s; 
                 f.setdata(10,20); 
                 cout<<"Rectangle First : "; 
                 f.area(); 
                 s.setdata(20,30); 
                 cout<<"\nRectangle Second :"; 
                 s.area(); 
                 getch(); 
      }