What is the meaning of :: ,->, : in C++?

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Abhay Gupta

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:: 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...
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:: 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 read less
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