This example expects an alphabet character input and replies with the

order of the character in the alphabet. It's not perfect though. How can

you improve it$?($Hint: $1$st$,2$nd$,3$rd$,4$th$...)$

char ch;

ch$=$getchar$()$;

if $($ch $>=\text{'}$a$\text{'}$ && ch $<=\text{'}$z$\text{'})\{$

printf$("\%$c is the $\%$dth character

$",ch,ch-\text{'}a\text{'}+1)$;

$\}$ else if $($ch $>=\text{'}$A$\text{'}$ && ch $<=\text{'}$Z$\text{'})\{$

printf$("\%$c is the $\%$dth character

$,ch,ch-\text{'}A\text{'}+1)$;

$\}$ else $\{$

printf$("$Not an alphabet."$)$;

$\}$