C++编程思想读后感(六):Initialization and Cleanup
2011-06-14 13:16
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1、结构体的初始化和清理工作至关重要,在C语言中须依赖程序员的编程习惯,往往造成很多bug。针对此问题,C++中引入了构造函数和析构函数概念,通过编译器行为强制实施初始化和清理工作。
2、C++建议在代码中按需实时定义对象或变量,区别于C中的定义变量于代码首部。
3、构造函数与析构函数异同如下:
![](https://oscdn.geek-share.com/Uploads/Images/Content/202010/26/34196a064fa5ba7f83e3ae980e4a0811.gif)
4、假设没有为类定义构造函数,系统会自动生成什么都不干的默认构造函数;假设你为该类定义了至少一个构造函数,则在实例化该类时,必须符合任一构造函数的参数要求,否则会发生编译错误。通常建议程序员手动定义类的构造函数。
2、C++建议在代码中按需实时定义对象或变量,区别于C中的定义变量于代码首部。
3、构造函数与析构函数异同如下:
![](https://oscdn.geek-share.com/Uploads/Images/Content/202010/26/34196a064fa5ba7f83e3ae980e4a0811.gif)
4、假设没有为类定义构造函数,系统会自动生成什么都不干的默认构造函数;假设你为该类定义了至少一个构造函数,则在实例化该类时,必须符合任一构造函数的参数要求,否则会发生编译错误。通常建议程序员手动定义类的构造函数。
![](https://oscdn.geek-share.com/Uploads/Images/Content/202010/26/e3e2fb6836cc06f15fe08e3c36b46dd9.gif)
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