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                高級編程語言的一條語句是對低級語言多條語句的封裝。高級編程語言中還有一個概念就是函數。函數是對實現某個特定功能的多條語句的封裝,它是一段具有名字的子程序,可以在需要的地方通過函數名調用執行。函數是一種功能抽象。
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