int ch ; k)EX(T\
ch=getche() ; 2-Y<4'>
if((ch>='a') && (ch<='z')) ;b-XWK=
printf("%c is a lowercase letter\n" ,ch); A}eOFu`
else if ((ch>='A') && (ch<='Z')) mI 74x3 [
print(" %c is a uppercase letter\n" ,ch); .^B*e6DAD
else if((ch>'0')&&(ch<'9') oudxm[/U
printf(" %c is a number character between 0 and 9\n" ,ch) ; lNSLs"x^
else ,VO2a mI
printf("%c is...") 8WnwQ%;m?
L3CP`cx
外面再加个循环就行了