int ch ; CM}1:o<<N
ch=getche() ; bB|UQaCl
if((ch>='a') && (ch<='z')) bITc9Hqc
printf("%c is a lowercase letter\n" ,ch); N5 BC<pu
else if ((ch>='A') && (ch<='Z')) K~j&Q{yws@
print(" %c is a uppercase letter\n" ,ch);
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else if((ch>'0')&&(ch<'9') *
u_nu>
printf(" %c is a number character between 0 and 9\n" ,ch) ; f0uzoeL<%
else o80"ZU|=
printf("%c is...") @a AR99 M
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外面再加个循环就行了