some_big_type foo; Now foo has been created. Want to pass parameters to its constructor: some_big_type foo(parameters, go, here); foo has been initialised.

some_big_type foo; Now foo has been created. Want to pass parameters to its constructor: some_big_type foo(parameters, go, here); foo has been initialised. Need a pointer? auto *foo = new some_big_type foo(parameters, go, here);