0a1eeea424
* fix: replace sh with shell fix replace terminal with shell fix replace node with js fix replace output with shell fix replace cs with csharp fix replace c++ with cpp fix replace c# with csharp fix replace javasctipt with js fix replace syntax with js fix replace unix with shell fix replace linux with shell fix replace java 8 with java fix replace swift4 with swift fix replace react.js with jsx fix replace javascriot with js fix replace javacsript with js fix replace c++ - with cpp fix: corrected various typos fix: replace Algorithm with nothing fix: replace xaml with xml fix: replace solidity with nothing fix: replace c++ with cpp fix: replace txt with shell fix: replace code with json and css fix: replace console with shell
42 lines
1.2 KiB
Markdown
42 lines
1.2 KiB
Markdown
---
|
||
title: C++ Arrays
|
||
localeTitle: C ++数组
|
||
---
|
||
## 什么是阵列？
|
||
|
||
数组是一系列相同数据类型的元素，它们存储在连续的内存位置，可以单独引用。
|
||
|
||
例如，包含5个称为数字的整数值的数组声明如下：
|
||
|
||
```cpp
|
||
int numbers [5];
|
||
```
|
||
|
||
Initializiation：
|
||
|
||
```cpp
|
||
//Initialization with entries:
|
||
int numbers [5] = {1, 2, 3, 4, 5};
|
||
|
||
//Initialization with no values:
|
||
int numbers [5] = {};
|
||
|
||
//Initialization with declaration:
|
||
int numbers [] = {1, 2, 3, 4, 5};
|
||
//Note that here the number of values defines the size of the array.
|
||
//In the examples above, the size was fixed beforehand
|
||
```
|
||
|
||
**请注意** ，C ++中的数组在大小上是不可置换的，这意味着一旦声明了大小为5的数组，就无法将其放大或缩小。如果您确实需要具有相同条目的更大阵列，则必须将所有条目复制到更大尺寸的新阵列。
|
||
|
||
### 访问：
|
||
|
||
可以通过引用它们在数组中的位置来访问数组中的元素。 （从0开始计数）。
|
||
例：
|
||
|
||
```cpp
|
||
x = numbers[0]; // = 1. [0] == first position
|
||
numbers[2] = 55; // Sets the third position (3) to the new number 55
|
||
//numbers[] is now: {1, 2, 55, 4, 5}
|
||
|
||
``` |