strtok segmentation fault

Can someone point out the mistake . I thought this was the crrect way of using strtok. But its running into seg fault

Code:

---

#include<stdio.h>
#include<stdlib.h>
#include<string.h>


int main()
{
    char * tch=strtok("aaaa its okay"," ");
    while (tch != NULL)
    {
        printf("%s\n",tch);
        tch = strtok (NULL, " ");
    }
   
 }

---

gdb output
gdb) run
Starting program: /var/www/YB_EmailAlerts/test/a.out


Program received signal SIGSEGV, Segmentation fault.
0xb7ebd0c5 in strtok () from /lib/i386-linux-gnu/libc.so.6
(gdb) up
#1 0x08048432 in main () at a.c:9
9 char * tch=strtok("aaaa its okay"," ");

strtok needs to be able to write to the string that you're tokenizing (it writes over the ending character with a '\0'). Literal strings are often not writable. So try

Code:

---

str [] = "aaaa its okay";
char * tch=strtok(str," ");

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thats right@oogabooga... so @aboosoyeed modify that and see what happens and tell me..

Quote:

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Originally Posted by Nyah Check

thats right@oogabooga... so @aboosoyeed modify that and see what happens and tell me..

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Don't post if you have nothing to say.

And try to make your posts conform to some type of grammar, they become twice as annoying if you don't.

hmmmmmm