[Cpp-Programming] doubt in c++

hi,

i'm pretty new to c++. i have got a simple doubt. please answer.

i have a class called square.

class square
{
//some implementation here
}

now when i write the main program i create the object. here is where
i'm confused. i feel i can create the object square in two ways. let
me know if i'm correct.

square obj_sqr1; // this is one way

square* ptr_square;
ptr_square = new square ; // using the new operator, forgive me if
the syntax is wrong

what is the difference between the two ? are they same ? ..
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