First try to predict the outcome of the following C program. Then, run it to find out whether your prediction was correct or not. Try to justify your observation using the concept of pointers in C$.$

#include

int main$()\{$

char str$[15]=$ "hello world!";

char$*$ p $=$ &str$[4]$;

printf$("\%$d $\%$d $\%$c $\%$c $\%$c$",$ p $-$ str$,$ p$[-2]-\text{'}$a$\text{'},$ p$[3]-4,*($p$--),*(++$p$))$;

$\}$