int ch ; .;9jdGBf
ch=getche() ; ~/2g)IS
if((ch>='a') && (ch<='z')) #<4--$Xo
printf("%c is a lowercase letter\n" ,ch); /#f^n]v
else if ((ch>='A') && (ch<='Z')) [u`6^TycP
print(" %c is a uppercase letter\n" ,ch); _K'7(d0z
else if((ch>'0')&&(ch<'9') C}q>YRubZ
printf(" %c is a number character between 0 and 9\n" ,ch) ; ygN>"eP
else Ry&q1j
printf("%c is...") n#4Gv|{XMD
@D~B{Hg
外面再加个循环就行了