int ch ;
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ch=getche() ; 7f[nNng
if((ch>='a') && (ch<='z')) b"x;i\Z0%
printf("%c is a lowercase letter\n" ,ch); E{Y0TZ+
else if ((ch>='A') && (ch<='Z')) KdYT5VUM/
print(" %c is a uppercase letter\n" ,ch); y|iZuHS}
else if((ch>'0')&&(ch<'9') ;z)$wH0xc
printf(" %c is a number character between 0 and 9\n" ,ch) ; `Z]a6@w~
else M ~.w:~Jm
printf("%c is...") LDr!d1A
RiaO`|1
外面再加个循环就行了