int ch ; _)$PKOzbb
ch=getche() ; ]=73-ywn]
if((ch>='a') && (ch<='z')) d {2
printf("%c is a lowercase letter\n" ,ch); I1 U7.CT
else if ((ch>='A') && (ch<='Z')) 6
fz}
print(" %c is a uppercase letter\n" ,ch); Q6C-4ja
else if((ch>'0')&&(ch<'9') 'z=:[#b
printf(" %c is a number character between 0 and 9\n" ,ch) ; W2-=U@
else gLE7Edcp6V
printf("%c is...")
\4ghYQ:
*pzq.#
外面再加个循环就行了