The parentheses are effectively a request to the compiler to value-initialize the array, which in this case sets its elements to 0.

圆括号要求编译器对数组做值初始化，在本例中即把数组元素都设置为0。

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You can declare and initialize a test variable, set its scope, and change its value.

您可以声明并初始化一个测试变量，设置它的范围，并更改它的值。

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There is no constructor defined to initialize it to another value.

我们没有声明构造函数用其它值来初始化它。

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