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Asked by Mohen Last Modified
Answer 
:: is scope resolution operator
It is basically used to define non inline functions i.e when u want to write body of function outside the class
-> Opera is used with pointers
This is used to access the members of a class (object)or structure whose address is stored in some pointer say( p)
Suppose student is a class wih members roll, and name
Student s;
s is a object
Student *p;
p=&s
now p holds address of object s and s has 2 members roll and name
I can access members of s directly using . Operator
cout<<s.roll
cout<<s.name
In second scenario we can access members of s through a pointer p as follow
Cout<<(*P).roll
cout<<(*p).name
instead of using (*p). We can use --> operator as follow
cout<<p->roll
cout<<p->name
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