int ch ; X47!E
|*
ch=getche() ; Fd8hGj1
if((ch>='a') && (ch<='z')) Yj8&
printf("%c is a lowercase letter\n" ,ch); 80&D""
else if ((ch>='A') && (ch<='Z')) Q[_Ni15
print(" %c is a uppercase letter\n" ,ch); Y5%;p33uFG
else if((ch>'0')&&(ch<'9') ^k72{ 3N(
printf(" %c is a number character between 0 and 9\n" ,ch) ; vm}G[
else A,<@m2
printf("%c is...") yazZw}};
4iBxPo(0
外面再加个循环就行了