Question

我的伪代码分配需要帮助：将2400小时转换为12格式

设计一种算法，提示并接收以2400格式表示的项目（例如2305小时），将其转换为12小时格式（例如11.05pm），并输入显示9999的哨兵时间。

Prompt for hrs, mins
Get hrs, mins                               
DOWHILE(hrs NOT = 99) AND (mins NOT = 99) // If hrs & mins not = to 99 then it will run if not it will stop
    IF (hrs = 00) THEN  // midnight. 0030. It will + 12 and display 12:30am
        format = am
        time = hrs + 12
        Display hrs, ":" , mins, format
        ELSE
        IF (hrs > 12) THEN  // afternoon. 1630. It will – 12 and display 4:30pm
            format = pm
            hrs = hrs – 12
            Display hrs, ":" , mins, format
        ELSE
            IF (hrs < 12) THEN      // from midnight 0100 to 1159. It will display AM
                format = am
                Display hrs, ":" , mins, format
                IF (hrs = 12) THEN      // if format is 1230. It will display 1230PM
                    format = pm
                    Display hrs, ":" , mins, format
                ENDIF
            ENDIF
        ENDIF
    ENDIF

    IF (hrs < 0) OR (hrs > 23) THEN // hrs less than 0 or more than 23 is error. 
        Display ‘Invalid hour input’
        IF (mins < 0) OR (mins >59) THEN    // mins less than 0 or more than 59 is error. 
            Display ‘Invalid mins input’
        ENDIF
    ENDIF

    Prompt for hrs, mins    // you prompt again , we are still in the loop until we hit 9999
    Get hrs, mins
ENDDO           // which stop here because it’s 9999

我做得对吗？请指教。这里有新生！非常感谢！

Answer 1

那么，根据你的教授希望你的伪代码看起来如何，我认为你应该做得很好。但是，有些线路有点多余。您可以将小时和分钟的越界检查合并到一个IF语句中。然后，您可以将time变量默认设置为"am"，这会将IF - ELSE IF - ELSE变为单IF - ELSE。哦，不是我确定这很重要，而是在hours = hours + 12时使用hours = 0，而不是hours = 12.，你可能只做done = false DOWHILE !done PROMPT hours, minutes GET hours, minutes IF hours < 0 OR hours > 23 OR minutes < 0 OR minutes > 60 DISPLAY "Invalid Time" ELSE format = "AM" IF hours > 12 format = "PM" hours = hours - 12 ELSE IF hours == 0 hours = 12 ELSE IF hours == 12 format = "PM" DISPLAY hours ":" minutes format ENDIF ENDIF PROMPT "Are you done?" GET done ENDLOOP再一次，你所拥有的应该工作得很好，我认为

编辑：啊......再次，不确定这是否重要，但有办法可能终止程序也可能有用。否则，你似乎永远陷入了你的循环中。

编辑2：这就是我要做的......

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如何将24:00转换为12:00格式

1 个答案: