int ch ; _#SCjFz
ch=getche() ; +s`HTf
if((ch>='a') && (ch<='z')) [?=Vqd
printf("%c is a lowercase letter\n" ,ch); vmY 88Kx&S
else if ((ch>='A') && (ch<='Z')) LGau!\
print(" %c is a uppercase letter\n" ,ch); )6t=Bel
else if((ch>'0')&&(ch<'9') 8B*XXFy\
printf(" %c is a number character between 0 and 9\n" ,ch) ; BDO]-y
else \qo}}I>e
printf("%c is...") 0+iaO"%
iB1+4wa
外面再加个循环就行了