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[Console] B06040324_B2 DL : 0: 模拟电信计费系统的设计与实现要求：（1）计费功能。根据存放在源数据文件中的通话记录和长途费率文件对每一条通话记录计算其通话费用，并将结果保存在费用文件中。其中：通话费的计算方法如下：通话费＝长途电话费＋本地电话费长途电话费＝费率（元/分钟）×通话时长（分钟） (通话时长不满1分钟的按1分钟计算) 本地电话费为：3分钟以内0.5元，以后每3分钟递增0.2元。（2）话费查询。输入一个电话号码，从费用文件中统计该电话号码的所有本地话费、长途话费，并从用户文件中查找其用户名，最后在屏幕上显示：用户名电话号码本地话费长途话费话费总计（3）话单查询。输入一个电话号码，查询并在屏幕显示该用户的所有通话记录，格式为：用户名主叫电话号码被叫电话号码通话时长 -Design and implementation of simulation of telecommunication billing system Requirements: (1) the charging function. According to the calculation of the call charges stored in the source data file in the call records and the long rate documents for each call record, and save the results in cost file. Among them: The following conversation method to calculate the fee: Long distance telephone calls =+ local telephone fee Long distance telephone fee = rate (yuan/minute)* call time (minutes) (call time less than 1 minutes to 1 minutes) Local call: 3 minutes 0.5 yuan, increasing 0.2 yuan every 3 minutes later. (2) calls inquiries. Enter a phone number, all local calls, long-distance calls statistics the phone number from the cost in the file, and find the user name from user file, and finally displayed on the screen: The user name phone number local calls long distance charges charges totaling (3) if a single query. Enter a phone number, query and display all the call records of th
Date : 2026-01-11 Size : 277kb User : Chengwei Xiao
[Console] 2 DL : 0: 实验二、进程控制（15分）设计并实现Unix的“time”命令。“mytime”命令通过命令行参数接受要运行的程序，创建一个独立的进程来运行该程序，并记录程序运行的时间。在Windows下实现: 使用CreateProcess()来创建进程使用WaitForSingleObject()在“mytime”命令和新创建的进程之间同步调用GetSystemTime()来获取时间在Linux下实现: 使用fork()/execv()来创建进程运行程序使用wait()等待新创建的进程结束调用gettimeofday()来获取时间 mytime的用法： $ mytime.exe program1 请注意运行结果的可读性，如：年月日时分秒毫秒微秒-The second experiment, process control (15 points) to design and implement the Unix " time" command. " Mytime" command from the command line arguments accepted to run the program, create a separate process to run the program, and record the program running time. In the Windows implementation: use CreateProcess () to create a process using WaitForSingleObject () between " mytime" command and the newly created process synchronous call GetSystemTime () to get the time in the Linux implementation: use fork ()/execv () to create a process to run the program using the wait () to wait for the end of the newly created process call gettimeofday () to get the time mytime usage: $ mytime.exe program1 Please note that the readability of the results, such as: YYMMDDHHMMSS milliseconds microseconds
Date : 2026-01-11 Size : 3kb User : 吴我