类函数中默认参数的使用
在类的构造函数中加入默认实参可以很方便的适用于多种情况。前几天想试用下,结果出了点小问题,记在这里,下次就不会忘记了。
为了方便查看,我把类的定义文件和实现文件和主函数都放在一个文件中了,正确的代码如下:
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需要注意的是,如果有默认实参的话,只需要在函数声明中给出默认实参就可以了,在函数定义时没必要给出默认实参,但一般是通过注释把默认实参注释掉,这样通读性比较高,就像上面程序所做的那样,谨记。
我没有什么雄心壮志,我只想给自己和关心自己的家人和朋友一个交代,仅此而已。