Write the output (with explanation preferably)

What will be the output of the following program

main()

{

char *s1 = "ABCDE";

char *s2 = "AB";

 while

(*s1 == *s2)

{

   if (* s1 =='\0' || *s2 == '\0')

break;

s1++ ;

  s2++;

}

if

if(*s2 == '\0')

printf("ABC") ;

else

printf("XYZ");

}