@ 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.
