用c语言写出离散数学中集合的交集并集补集的程序

好的，下面是一个简单的示例程序：

#include <stdio.h>

#define MAX_SIZE 10

int main() {
    int set1[MAX_SIZE], set2[MAX_SIZE], union_set[MAX_SIZE], intersection_set[MAX_SIZE], complement_set[MAX_SIZE];
    int n1, n2, i, j, k, flag;

    // 输入第一个集合
    printf("Enter the size of set 1: ");
    scanf("%d", &n1);
    printf("Enter the elements of set 1: ");
    for (i = 0; i < n1; i++) {
        scanf("%d", &set1[i]);
    }

    // 输入第二个集合
    printf("Enter the size of set 2: ");
    scanf("%d", &n2);
    printf("Enter the elements of set 2: ");
    for (i = 0; i < n2; i++) {
        scanf("%d", &set2[i]);
    }

    // 计算并集
    k = 0;
    for (i = 0; i < n1; i++) {
        union_set[k++] = set1[i];
    }
    for (i = 0; i < n2; i++) {
        flag = 1;
        for (j = 0; j < n1; j++) {
            if (set2[i] == set1[j]) {
                flag = 0;
                break;
            }
        }
        if (flag) {
            union_set[k++] = set2[i];
        }
    }
    printf("The union of set 1 and set 2 is: ");
    for (i = 0; i < k; i++) {
        printf("%d ", union_set[i]);
    }
    printf("\n");

    // 计算交集
    k = 0;
    for (i = 0; i < n1; i++) {
        for (j = 0; j < n2; j++) {
            if (set1[i] == set2[j]) {
                intersection_set[k++] = set1[i];
            }
        }
    }
    printf("The intersection of set 1 and set 2 is: ");
    for (i = 0; i < k; i++) {
        printf("%d ", intersection_set[i]);
    }
    printf("\n");

    // 计算补集
    k = 0;
    for (i = 0; i < n1; i++) {
        flag = 1;
        for (j = 0; j < n2; j++) {
            if (set1[i] == set2[j]) {
                flag = 0;
                break;
            }
        }
        if (flag) {
            complement_set[k++] = set1[i];
        }
    }
    printf("The complement of set 1 with respect to set 2 is: ");
    for (i = 0; i < k; i++) {
        printf("%d ", complement_set[i]);
    }
    printf("\n");

    return 0;
}

程序中定义了 `set1` 和 `set2` 分别表示两个输入的集合，`union_set`、`intersection_set` 和 `complement_set` 分别表示它们的并集、交集和补集。程序先分别输入两个集合，然后按照离散数学中的定义计算并集、交集和补集，并输出结果。