int ch ; g/J
^YT!
ch=getche() ; #|xK>;
if((ch>='a') && (ch<='z')) gtqgf<mS
printf("%c is a lowercase letter\n" ,ch); ig)rK<@*[
else if ((ch>='A') && (ch<='Z')) -"#;U`.oh7
print(" %c is a uppercase letter\n" ,ch); H~Hh$-z
else if((ch>'0')&&(ch<'9') u 6$fF=
printf(" %c is a number character between 0 and 9\n" ,ch) ; >@`D@_v
else _T)dmhG
printf("%c is...") \k;*Ej~.
rt^<=|Z
外面再加个循环就行了