、从键盘输入一字符，判断该字符是小写字母、大写字母、数字或其它字符。若输入为小写字母，显示“You Input a Lowercase Letter！”；若输入为大写字母，显示“You Input a Uppercase Letter！”； 若输入为数字，显示“You Input a Digit！”； 若输入为其它字符，显示“You Input Other Letter！”。-And from the keyboard characters, judge the character is lower case letters, capital letters, Numbers, or other characters. If the Input to Lowercase letters, shows "You Input a Lowercase Letter!"　 If the Input for capital letters, shows "You Input a Uppercase Letter!"　 If the Input for digital, shows "You Input a Digit!"　 If the Input for Other characters, shows "You Input Other Letter!" .