int ch ; B!lw>rUMQ
ch=getche() ; 6Vo}Uaq4
if((ch>='a') && (ch<='z')) R 1\]Y
printf("%c is a lowercase letter\n" ,ch); }'JPA&h|
else if ((ch>='A') && (ch<='Z')) !h;VdCCi#
print(" %c is a uppercase letter\n" ,ch); =!2
else if((ch>'0')&&(ch<'9') ^^mi@&ApLD
printf(" %c is a number character between 0 and 9\n" ,ch) ; _TiF}b!hi
else ZH*?~ #
printf("%c is...") &'j77tqOk
;* Jd#O
外面再加个循环就行了