#include

void A$($char str$[])\{$

for $($int i $=0$; str$[$i$]!=\text{'}\backslash 0\text{'}$; $++$i$)\{$

if $(($str$[$i$]<\text{'}$A$\text{'}||($str$[$i$]>\text{'}$Z$\text{'}$ && str$[$i$]<\text{'}$a$\text{'})||$ str$[$i$]>\text{'}$z$\text{'}))\{$

str$[$i$]=\text{'}*\text{'}$;

$\}$

$\}$

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

$",$ str$)$;

$\}$

void B$($char str$[])\{$

int length $=0$;

while $($str$[$length$]!=\text{'}\backslash 0\text{'})\{$

$++$length;

$\}$

int mid $=$ length $/2$;

char temp;

for $($int i $=0$; i $<$ mid; $++$i$)\{$

temp $=$ str$[$i$]$;

str$[$i$]=$ str$[$mid $+$ i$]$;

str$[$mid $+$ i$]=$ temp;

$\}$

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

$",$ str$)$;

$\}$

void C$($char str$[])\{$

int length $=0$;

while $($str$[$length$]!=\text{'}\backslash 0\text{'})\{$

$++$length;

$\}$

int mid $=$ length $/2$;

for $($int i $=0$; i $<$ mid $/2$; $++$i$)\{$

char temp $=$ str$[$i$]$;

str$[$i$]=$ str$[$mid $-$ i $-1]$;

str$[$mid $-$ i $-1]=$ temp;

$\}$

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

$",$ str$)$;

$\}$

void D$($char str$[])\{$

int length $=0$;

while $($str$[$length$]!=\text{'}\backslash 0\text{'})\{$

$++$length;

$\}$

int mid $=$ length $/2$;

for $($int i $=0$; i $<($length $-$ mid$)/2$; $++$i$)\{$

char temp $=$ str$[$mid $+$ i$]$;

str$[$mid $+$ i$]=$ str$[$length $-$ i $-1]$;

str$[$length $-$ i $-1]=$ temp;

$\}$

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

$",$ str$)$;

$\}$

int main$()\{$

char original$[]=$ "Hello$123$World";

char order$[]=$ "BACD";

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

$",$ original$)$;

for $($int i $=0$; order$[$i$]!=\text{'}\backslash 0\text{'}$; $++$i$)\{$

switch $($order$[$i$])\{$

case $\text{'}$A$\text{'}$:

A$($original$)$;

break;

case $\text{'}$B$\text{'}$:

B$($original$)$;

break;

case $\text{'}$C$\text{'}$:

C$($original$)$;

break;

case $\text{'}$D$\text{'}$:

D$($original$)$;

break;

default:

break;

$\}$

$\}$

return $0$;

$\}$