Pointers And Operators
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Computer Science (083)
Pointers to Classes
Pointers to classes (Example) #include #include class A // ********** BASE CLASS ************ { int x2,x3; public : int x1; void initialize(int a,int b,int c) {x1=a;x2=b;x3=c; cout <<"Data members initialized ....\n"; getch(); } void display() {cout<<x1<<'\t'<<x2<<'\t'<<x3<<endl;} }; void main() { clrscr(); A obj; obj.initialize(10,20,30); A * ptr=&obj; ptr->display(); cout<<"\nptr->x1 = "<x1; cout<<"\n(*ptr).x1 = "<<(*ptr).x1 ; // NOTE x1 is declared under public section //otherwise will not be accessible getch(); (*ptr).display(); getch(); }
Summary of pointer and operators (*, &, ., ->) expression can be read as *x pointed by x &x address of x x.y member y of object x x->y member y of object pointed by x (*x).y member y of object pointed by x (equivalent to the previous one)
NOTE : What has been discussed for classes is also valid for pointers to structures. By Nita Arora
Pointers to Classes
Pointers to classes (Example) #include
Summary of pointer and operators (*, &, ., ->) expression can be read as *x pointed by x &x address of x x.y member y of object x x->y member y of object pointed by x (*x).y member y of object pointed by x (equivalent to the previous one)
NOTE : What has been discussed for classes is also valid for pointers to structures. By Nita Arora
