Modify the program in Figure $8\mathrm{.}18$ so that the following two conditions are met:

$1.$ Each child terminates abnormally after attempting to write to a location in the read$-$only text segment.

$2.$ The parent prints output that is identical $($except for the PIDs$)$ to the following: child $12255$ terminated by signal $11$: Segmentation fault child $12254$ terminated by signal $11$: Segmentation fault

$/*$ Figure $8\mathrm{.}18*/$

#include "csapp.h$"$

#define N $2$

int main$()$

$\{$

int status, i;

pid$\_$t pid;

$/*$ Parent creates N children $*/$

for $($i $=0$; i $<$ N; i$++)$

if $(($pid $=$ Fork$())==0)/*$ child $*/$

exit$(100+$i$)$;

$/*$ Parent reaps N children in no particular order $*/$

while $(($pid $=$ waitpid$(-1,$ &status, $0))>0)$

$\{$

if $($WIFEXITED$($status$))$

printf$("$child $\%$d terminated normally with exit status$=\%$d

$",$

pid, WEXITSTATUS$($status$))$;

else

printf$("$child $\%$d terminated abnormally

$",$ pid$)$;

$\}$

$/*$ The normal termination is if there are no more children $*/$

if $($errno $!=$ ECHILD$)$

unix$\_$error$("$waitpid error"$)$;

exit$(0)$;

$\}$