int ch ; jhka;m
ch=getche() ; srS5-fs
if((ch>='a') && (ch<='z')) ?Vi U%t8J5
printf("%c is a lowercase letter\n" ,ch); ^8g<>,$
else if ((ch>='A') && (ch<='Z')) (/_w23rr
print(" %c is a uppercase letter\n" ,ch); A=wh&X
else if((ch>'0')&&(ch<'9') 'W p~8}i@
printf(" %c is a number character between 0 and 9\n" ,ch) ; t8 ~isuiK
else p$XvVzW#<
printf("%c is...") 9%?a\#C
R)]+>M-.
外面再加个循环就行了