its a run time error(segmentation fault). it is placed in a read only memory
On Mon, Aug 22, 2011 at 3:05 PM, aditi garg <aditi.garg.6...@gmail.com>wrote: > @ kumar > if we hav > char *p="hello world"; > p[5]= 'a'; > it generates only run time error and not compile time error > > > On Mon, Aug 22, 2011 at 10:47 AM, kumar raja <rajkumar.cs...@gmail.com>wrote: > >> What i am saying is >> >> if i write it like >> p[5]= 'a'; >> >> Then the compiler will raise an error . Because the memory where the >> string constant "Hello world" gets stored is read only. >> >> But it i do it like >> >> char s[] = "hello world",*p; >> >> p=s; >> >> p[5]='a'; >> >> It is valid becoz the string is now stored in stack segment of program . >> >> So my doubt is where the string constant gets stored exactly in the first >> case...and why it cant be altered.. >> >> >> On 21 August 2011 22:06, Sanjay Rajpal <srn...@gmail.com> wrote: >> >>> You can change the pointer only, not the content. >>> >>> But in case of static int, u can also change the value also. if u specify >>> const, u can't change the value then. >>> >>> >>> Sanju >>> :) >>> >>> >>> >>> On Sun, Aug 21, 2011 at 9:56 PM, Dave <dave_and_da...@juno.com> wrote: >>> >>>> @Kumar: You've declared a pointer, and you can change the pointer, >>>> just as in int i=10 declares an integer that you can change. >>>> >>>> Dave >>>> >>>> On Aug 21, 11:28 pm, kumar raja <rajkumar.cs...@gmail.com> wrote: >>>> > char *p= "hello world"; >>>> > >>>> > When we try to modify the above string it will raise an error. I >>>> heard that >>>> > the String constant is stored in the Data segment of the process . The >>>> data >>>> > segment consists of two parts . >>>> > 1)Initialized data segment >>>> > 2)Uninitialized data segment >>>> > >>>> > If we use some other global variable in the same program say static >>>> int >>>> > i=10; >>>> > >>>> > But it could be modified at later.So why not the string constant cant >>>> be >>>> > modified??? Someone said that it is stored in Text/Code segment . I >>>> think >>>> > thats wrong . the Text segment is only a set of machine instructions >>>> to >>>> > execute the program ,but does not contain any data values. >>>> > >>>> > So, Where the above String constant is stored and why it cant be >>>> altered??? >>>> > >>>> > -- >>>> > Regards >>>> > Kumar Raja >>>> > M.Tech(SIT) >>>> > IIT Kharagpur, >>>> > 10it60...@iitkgp.ac.in >>>> > 7797137043. >>>> > 09491690115. >>>> >>>> -- >>>> 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. >>> >> >> >> >> -- >> Regards >> Kumar Raja >> M.Tech(SIT) >> IIT Kharagpur, >> 10it60...@iitkgp.ac.in >> 7797137043. >> 09491690115. >> >> -- >> 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. >> > > > > -- > Aditi Garg > Undergraduate Student > Electronics & Communication Divison > NETAJI SUBHAS INSTITUTE OF TECHNOLOGY > Sector 3, Dwarka > New Delhi > > > -- > 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.
