int ch ; M{M?#Q
ch=getche() ; `yWWX.`
if((ch>='a') && (ch<='z')) ^*+-0b;[G
printf("%c is a lowercase letter\n" ,ch); mc}r15:<
else if ((ch>='A') && (ch<='Z')) YLe$Vv735
print(" %c is a uppercase letter\n" ,ch); Mf.:y
else if((ch>'0')&&(ch<'9') .[hbiv#
printf(" %c is a number character between 0 and 9\n" ,ch) ; e(;nhU3a*,
else I
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printf("%c is...") Zmr*$,v<y
h2fTG
外面再加个循环就行了