means if i use like main() { int *ptr; abc(ptr); } abc(int *a) { } this is shallow copy m i ryt??? if yes thne tell xample of deep shallow..otherwise give me examples regarding c++....cozxamples clear everythng
On Sun, Oct 2, 2011 at 11:00 AM, megha agrawal <megha14.2...@gmail.com>wrote: > One function passes a pointer to the value of interest to another > function. Both functions can access the > value of interest, but the value of interest itself is not copied. This > communication is > called shallow. The alternative where a complete copy is made and sent is > known as a "deep" > copy. > > On Sat, Oct 1, 2011 at 7:36 PM, rahul sharma <rahul23111...@gmail.com>wrote: > >> plz give any c++ xample to xplain bit more >> >> >> On Sat, Oct 1, 2011 at 6:59 PM, Bejoy kalikotay(sikkimesechora....) < >> bijaykaliko...@gmail.com> wrote: >> >>> A shallow copy of an object copies all of the member field values. >>> This works well if the fields are values, but may not be what you want >>> for fields that point to dynamically allocated memory. The pointer >>> will be copied. but the memory it points to will not be copied -- the >>> field in both the original object and the copy will then point to the >>> same dynamically allocated memory, which is not usually what you want. >>> The default copy constructor and assignment operator make shallow >>> copies. >>> >>> A deep copy copies all fields, and makes copies of dynamically >>> allocated memory pointed to by the fields. To make a deep copy, you >>> must write a copy constructor and overload the assignment operator, >>> otherwise the copy will point to the original, with disasterous >>> consequences. >>> >>> On Oct 1, 4:50 pm, rahul sharma <rahul23111...@gmail.com> wrote: >>> > plz xpalin waht is deep and shallow copy in c++ >>> >>> -- >>> You received this message because you are subscribed to the Google Groups >>> "Algorithm Geeks" group. >>> To post to this group, send email to algogeeks@googlegroups.com. >>> To unsubscribe from this group, send email to >>> algogeeks+unsubscr...@googlegroups.com. >>> For more options, visit this group at >>> http://groups.google.com/group/algogeeks?hl=en. >>> >>> >> -- >> You received this message because you are subscribed to the Google Groups >> "Algorithm Geeks" group. >> To post to this group, send email to algogeeks@googlegroups.com. >> To unsubscribe from this group, send email to >> algogeeks+unsubscr...@googlegroups.com. >> For more options, visit this group at >> http://groups.google.com/group/algogeeks?hl=en. >> > > -- > You received this message because you are subscribed to the Google Groups > "Algorithm Geeks" group. > To post to this group, send email to algogeeks@googlegroups.com. > To unsubscribe from this group, send email to > algogeeks+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/algogeeks?hl=en. > -- You received this message because you are subscribed to the Google Groups "Algorithm Geeks" group. To post to this group, send email to algogeeks@googlegroups.com. To unsubscribe from this group, send email to algogeeks+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/algogeeks?hl=en.