int ch ; sO0j!;N
ch=getche() ; df7 xpV
if((ch>='a') && (ch<='z')) oWV^o8& GH
printf("%c is a lowercase letter\n" ,ch); `c /mmS
else if ((ch>='A') && (ch<='Z')) fB`7f
$[
print(" %c is a uppercase letter\n" ,ch); F~zrg+VDjL
else if((ch>'0')&&(ch<'9') f#|
wb~
printf(" %c is a number character between 0 and 9\n" ,ch) ; %Z{ 7*jtE
else z99jW<*0
printf("%c is...") I@l }%L
y /OPN<=*
外面再加个循环就行了