编辑“︁C 语言回调函数”︁（章节）

== 基本示例 ==

=== 简单回调示例 ===
<syntaxhighlight lang="c">
#include <stdio.h>

// 回调函数类型定义
typedef void (*Callback)(int);

// 高阶函数，接受回调函数作为参数
void processNumbers(int arr[], int size, Callback callback) {
    for (int i = 0; i < size; i++) {
        callback(arr[i]);  // 调用回调函数
    }
}

// 具体的回调函数实现
void printNumber(int num) {
    printf("Number: %d\n", num);
}

void squareNumber(int num) {
    printf("%d squared is %d\n", num, num * num);
}

int main() {
    int numbers[] = {1, 2, 3, 4, 5};
    int size = sizeof(numbers) / sizeof(numbers[0]);
    
    printf("Printing numbers:\n");
    processNumbers(numbers, size, printNumber);
    
    printf("\nCalculating squares:\n");
    processNumbers(numbers, size, squareNumber);
    
    return 0;
}
</syntaxhighlight>

'''输出:'''
<pre>
Printing numbers:
Number: 1
Number: 2
Number: 3
Number: 4
Number: 5

Calculating squares:
1 squared is 1
2 squared is 4
3 squared is 9
4 squared is 16
5 squared is 25
</pre>