Write A C++ Program To Depict Initialization Of Object Using Default Constructor Without Default Arguments.

#include<iostream.h> 
 #include<conio.h> 
 class rec 
 { 
       private: 
                       int I,b; 
       public: 
                       rec() 
                  { 
                       I=4; 
                       b=3; 
                  } 
                       int area() 
                 { 
                       return(I*b); 
                 } 
 }; 
     void main() 
 { 
     clrscr(); 
     rec obj; 
     cout<<"Area is : "<<obj.area(); 
     getch(); 
 } 
 Output : 
 Area is : 12