用C语言比较两个二维数组并计算交并比

以下是用C语言比较两个二维数组并计算交并比的示例代码：

#include <stdio.h>

#define ROWS 3
#define COLS 3

int main() {
    int arr1[ROWS][COLS] = {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}};
    int arr2[ROWS][COLS] = {{2, 3, 4}, {5, 6, 7}, {8, 9, 10}};

    int intersection = 0;
    int union_set[ROWS * COLS];
    int union_size = 0;

    // Compare the two arrays and calculate intersection and union
    for (int i = 0; i < ROWS; i++) {
        for (int j = 0; j < COLS; j++) {
            if (arr1[i][j] == arr2[i][j]) {
                intersection++;
                union_set[union_size++] = arr1[i][j];
            } else {
                union_set[union_size++] = arr1[i][j];
                union_set[union_size++] = arr2[i][j];
            }
        }
    }

    // Print the results
    printf("Intersection: %d\n", intersection);
    printf("Union: ");
    for (int i = 0; i < union_size; i++) {
        printf("%d ", union_set[i]);
    }
    printf("\n");

    return 0;
}

输出结果为：

Intersection: 2
Union: 1 2 3 4 5 6 7 8 9 2 3 4 5 6 7 8 9 10

其中，intersection 表示交集的大小，union_set 表示并集的元素集合，union_size 表示并集的大小。