要遍历并输出数组中的每个元素，你可以使用不同的方法，具体取决于你使用的编程语言和数组类型。以下是一些常见编程语言中遍历数组并输出元素的方法：
JavaScript
for 循环
```javascript
let numbers = [1, 2, 3, 4, 5];
for (let i = 0; i < numbers.length; i++) {
console.log(numbers[i]);
}
```
forEach 方法
```javascript
let numbers = [1, 2, 3, 4, 5];
numbers.forEach(function (number) {
console.log(number);
});
```
PHP
foreach 循环
```php
$fruits = array("Apple", "Banana", "Cherry");
foreach ($fruits as $fruit) {
echo $fruit . "\n";
}
```
遍历关联数组
```php
$person = array(
"name" => "John",
"age" => 30,
"city" => "New York"
);
foreach ($person as $key => $value) {
echo "$key: $value\n";
}
```
Python
for 循环
```python
fruits = ["Apple", "Banana", "Cherry"]
for fruit in fruits:
print(fruit)
```
遍历二维数组
```python
arr = [[1, 2], [3, 4, 5], [6, 7]]
for row in arr:
for item in row:
print(item, end=" ")
print()
```
Java
for 循环
```java
int[] numbers = {1, 2, 3, 4, 5};
for (int i = 0; i < numbers.length; i++) {
System.out.println(numbers[i]);
}
```
增强型 for 循环（foreach）
```java
int[] numbers = {1, 2, 3, 4, 5};
for (int number : numbers) {
System.out.println(number);
}
```
C
for 循环
```csharp
int[] numbers = {1, 2, 3, 4, 5};
for (int i = 0; i < numbers.Length; i++) {
Console.WriteLine(numbers[i]);
}
```
foreach 循环
```csharp
int[] numbers = {1, 2, 3, 4, 5};
foreach (int number in numbers) {
Console.WriteLine(number);
}
```
C++
for 循环
```cpp
include include int main() { std::vector for (int i = 0; i < numbers.size(); i++) { std::cout << numbers[i] << std::endl; } return 0; } ``` range-based for 循环 ```cpp include include int main() { std::vector for (int number : numbers) { std::cout << number << std::endl; } return 0; } ``` 这些示例展示了如何在不同的编程语言中遍历数组并输出每个元素。你可以根据你使用的编程语言选择合适的方法。
