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                聲明和調用多參函數的語法往往成為錯誤的誘因。首先,要記住必須聲明每個參數的類型。例: ~~~ void printTime (int hour, int minute) { cout << hour; cout << ":"; cout << minute; } ~~~ 很容易寫成(int hour, minute),這種形式用于變量聲明是合法的,但用于參數聲明就不行。 另一個容易混淆的地方是,你不需要聲明參數值的類型。下面這段代碼是錯誤的! ~~~ int hour = 11; int minute = 59; printTime (int hour, int minute); // 錯誤! ~~~ 本例中,編譯器看到聲明語句就可以知道hour和minute的類型。傳遞參數值時給出類型是不必要的,也是非法的。正確的語法形式是printTime(hour, minute)。
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