u want advantage
1)can return more then 1 value from a function
2)no need to pass the entire object to a function..can pass just the address
3)if we want our object to be modify by some function then we have only option to pass its address or reference
4)can implement run time polymorphism(virtual...function)
5)in  writing driver .....pointer is needed....also can do programming at low level
6)can implement garbage collection thing like reference counting
7)if want to shere some object omng classes we can have the pointer of that object
in each intyerested classes

......actually we can't move without pointer .....its power of c & c++

we can find lot more uses...