@saurabh..thnx....plz provide me code snippet for pre increment also..it will help a lot..i can guess it will do n++ and return itself..plz give code snippet...
On Mon, Oct 29, 2012 at 10:50 AM, Saurabh Kumar <[email protected]>wrote: > Post increment returns temp object because it has to return the old value > of object not the new incremented one: > Simply put, the code for post increment somewhat goes like this: > > int operator++ (int &n){ > int temp = n; > n = n+1; > return temp; > } > > that's also the reason you cannot use it as a lvalue in an exprression, as > you would be assigning nowhere. > > On 27 October 2012 20:09, rahul sharma <[email protected]> wrote: > >> But y post returns temp. object >> >> >> On Fri, Oct 26, 2012 at 8:18 PM, Saurabh Kumar <[email protected]>wrote: >> >>> i++: Post increment can't be a lvalue because Post increment internally >>> returns a temporary object (NOT the location of i) hence you cannot assign >>> anything to it. The result of i++ can be used only as a rvalue. >>> ++i: whereas, in Pre-increment value gets incremented and the same >>> location is returned back to you, hence can be used as lvalue in an >>> expression.(C++ allows this) >>> Both can be used as rvalues though. >>> >>> On 26 October 2012 18:54, rahul sharma <[email protected]> wrote: >>> >>>> why pre inc. is l value and post is r value..please explain >>>> >>>> -- >>>> You received this message because you are subscribed to the Google >>>> Groups "Algorithm Geeks" group. >>>> To post to this group, send email to [email protected]. >>>> To unsubscribe from this group, send email to >>>> [email protected]. >>>> 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 [email protected]. >>> To unsubscribe from this group, send email to >>> [email protected]. >>> 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 [email protected]. >> To unsubscribe from this group, send email to >> [email protected]. >> 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 [email protected]. > To unsubscribe from this group, send email to > [email protected]. > 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 [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/algogeeks?hl=en.
