问题的提出：编写一个长途电话计费程序，计费规则是每6秒钟0.06元，要求能输入发话地、收话地，输出话费。-Of the problem: the preparation of a long-distance telephone billing procedures, billing rules is 0.06 yuan per 6 seconds, the requirements to enter the caller to close, then, the output charges.