int ch ; ~{RXc+
ch=getche() ; M nH4p
if((ch>='a') && (ch<='z')) lE$X9yIt
printf("%c is a lowercase letter\n" ,ch); sq-[<ryk
else if ((ch>='A') && (ch<='Z')) F7cv`i?2."
print(" %c is a uppercase letter\n" ,ch); QTtcGU
else if((ch>'0')&&(ch<'9') ewY+a ,t
printf(" %c is a number character between 0 and 9\n" ,ch) ; U6n%rdXJ=
else vSPkm)O0)
printf("%c is...") umSbxEZU@
co@Q
外面再加个循环就行了