int ch ; *"kM{*3:v
ch=getche() ; E4!Fupkpf
if((ch>='a') && (ch<='z')) Jwp7gYZ
printf("%c is a lowercase letter\n" ,ch); uEYtE7
else if ((ch>='A') && (ch<='Z')) d3Rw!slIq
print(" %c is a uppercase letter\n" ,ch); H"KCK6
else if((ch>'0')&&(ch<'9') ckn~#UE=
printf(" %c is a number character between 0 and 9\n" ,ch) ; 7rA;3?p)
else eQ"E
printf("%c is...") OZT.=^:A
eFAnFJ][L
外面再加个循环就行了