int ch ; b6Jv|1w'
ch=getche() ; "yR56`=
if((ch>='a') && (ch<='z')) 9/$D&tRN
printf("%c is a lowercase letter\n" ,ch); wAHW@q9CK
else if ((ch>='A') && (ch<='Z')) .r9-^01mG
print(" %c is a uppercase letter\n" ,ch); :tP:X+?O
else if((ch>'0')&&(ch<'9') ],ow@}
printf(" %c is a number character between 0 and 9\n" ,ch) ; ,BM6s,\
else 9*!C|gC9Ia
printf("%c is...") <v<TsEI
nQ\ +Za==
外面再加个循环就行了