Question

If I have:

char *tokenPtr = "testingpointerindex"

and I want to access everything after the 4th character, how would I go about that? I tried :

char *tokenPtr = "testingpointerindex";

char *host = tokenPtr + 4;
printf("%s\n",host);

return host;

It’s just an outake but I hope it gives enough info, I get a bus error.
Thanks

EDIT:

The full code

char * getHost(char *buf){
char *tokenPtr;
tokenPtr = strtok(buf, "\r\n" ); 
printf("got token\n");
while ( tokenPtr != NULL ) { 
    if(strncmp(tokenPtr,"Host",4) == 0){
        break;
    }
    else{
        tokenPtr = strtok( NULL, "\r\n" );
    }
}
char *host = tokenPtr + 7;
printf("%s\n",host);
    return host;
}
int main(int argc, char *argv[])
{
char *msg = "GET /index.html HTTP/1.1\r\n Host: www.google.com\r\n\r\n";
getHost(msg);


}

Answer 1

The above code works fine.

However, there’s one thing to mention: string literals (e.g. "testingpointerindex") are non-modifiable in C. Therefore you should use const char *, not char *.