指向

We have already seen that when we use an array name in an expression, we are actually using a pointer to the first element in the array.

我们已经看到，在表达式中使用数组名时，实际上使用的是指向数组第一个元素的指针。

An array name in expression is treated by the compiler as a pointer to the first element of the array.

规则1。表达式中的数组名被编译器当作一个指向该数组第一个元素的指针

In particular, when we use the name of an array in an expression, that name is automatically converted into a pointer to the first element of the array

特别是在表达式中使用数组名时，该名字会自动转换为指向数组第一个元素的指针

Int *pia = new int[10];// array of 10 uninitialized intsThis new expression allocates an array of ten ints and returns a pointer to the first element in that array, which we use to initialize pia.

此 new 表达式分配了一个含有 10 个 int 型元素的数组，并返回指向该数组第一个元素的指针，此返回值初始化了指针 pia。

ADDR is used in the parameter to give a pointer to the array as the parameter, and not the value itself.

在参数中使用ADDR来把指向数组的指针作为参数，而不是值本身。

The expression then applies the arrow operator to the Folder pointer in order to run the addMsg operation. We pass this, which points to the Message we want to add to the Folder.

然后表达式对 Folder 指针应用箭头操作符以执行 addMsg 操作，将 this 传给 addMsg，该指针指向我们想要添加到 Folder 中的 Message。

This is how we will make the point to the arrow.

这是我们将如何使指向箭头。

You will also see an arrow pointing to the area on the map.

你也将看见一个箭头指向重要的区域。

All arrows pointing in one direction, but who is the bull's eye?!

所有的箭都在指向一个方向，但谁是那靶心呢？！

Of angles pointing outward at an angle of less than 180 degrees.

一个指向外面的小于180度的角。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。