题目内容

巳知某桥梁收费站规定： 20 吨以上的大货车的过桥费为 20 元， 10,..._,20 吨之间的货车的过桥费为 15 元， 10 吨以下的货车的过桥费为 10 元， 30 座以上的客车的过桥费为 15元， 20~30 座的客车的过桥费为 10 元， 20 座以下的客车的过桥费为 5 元，轿车的过桥费为15 元。现请你编写一段程序，使收费站的收费人员能从键盘输入车辆所属的收费类型，并在屏幕上打印相应的收费金额。另外收费人员只要用键盘输入字符 'Q' 即可结束收费程序。

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