当然，我可以为你写一段代码。请告诉我你希望使用哪种编程语言以及你想要实现的功能。以下是一些常见的示例：
### Python 示例：计算两个数的和
```python
def add_numbers(a, b):
return a + b
# 测试函数
num1 = 5
num2 = 3
result = add_numbers(num1, num2)
print(f"The sum of {num1} and {num2} is {result}")
```
### JavaScript 示例：打印 "Hello, World!"
```javascript
function sayHello() {
console.log("Hello, World!");
}
// 调用函数
sayHello();
```
### Java 示例：计算阶乘
```java
public class Factorial {
public static void main(String[] args) {
int number = 5;
System.out.println("Factorial of " + number + " is " + factorial(number));
}
public static int factorial(int n) {
if (n == 0) {
return 1;
} else {
return n * factorial(n - 1);
}
}
}
```
### C++ 示例：打印 "Hello, World!"
```cpp
#include
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