Doubt about string

Question

#include <stdio.h>

int main ()
{
    char *ptr = "\123456789\n"; 
    printf("%s",ptr);

}

Can anyone explain what happend with escaping character before 1 ?

Comments

@soumya ,yeah, it is showing , octal escape sequence out of range for 656..could u please explain why it is giving warning  "octal escape sequence out of range" for 656 ?

---

The reason behind it is - Every escape sequence take 1-byte space.
Now with 8 bits maximum 255 i.e '\377 is possible.

---

Thanks a lot @soumya...