$16\mathrm{.}12$ The following code reads a string from the keyboard and prints out a

version with any uppercase characters converted to lowercase.

However, it has a flaw. Identify it$.$

#include

#define MAX$\_$LEN $10$

char $*$LowerCase$($char $*$s$)$;

int main$($void$)$

$\{$

char str$[$MAX$\_$LEN$]$;

printf$("$Enter a string : $")$;

scanf$("\%$s$",$ str$)$;

printf$("$Lowercase: $\%$s

$",$ LowerCase$($str$))$;

$\}$

char $*$LowerCase$($char $*$s$)$

$\{$

char newStr$[$MAX$\_$LEN$]$;

for $($int index $=0$; index $<$ MAX$\_$LEN; index$++)\{$

if $(\text{'}$A$\text{'}<=$ s$[$index$]$ && s$[$index$]<=\text{'}$Z$\text{'})$

newStr$[$index$]=$ s$[$index$]+(\text{'}$a$\text{'}-\text{'}$A$\text{'})$;

else

newStr$[$index$]=$ s$[$index$]$;

$\}$

return newStr;

$\}$