集合A,B用LA，LB表示，第一行输入A和B元素个数，第二行第三行分别输入元素，输出集合A，B和并集C ，C语言

#include <stdio.h>

#define MAX_SIZE 100

int main() {
    int la[MAX_SIZE], lb[MAX_SIZE], c[MAX_SIZE * 2];
    int n, m, i, j, k;

    printf("Please enter the number of elements in set A: ");
    scanf("%d", &n);
    printf("Please enter the elements of set A: ");
    for (i = 0; i < n; i++) {
        scanf("%d", &la[i]);
    }

    printf("Please enter the number of elements in set B: ");
    scanf("%d", &m);
    printf("Please enter the elements of set B: ");
    for (i = 0; i < m; i++) {
        scanf("%d", &lb[i]);
    }

    i = j = k = 0;
    while (i < n && j < m) {
        if (la[i] < lb[j]) {
            c[k++] = la[i++];
        } else if (lb[j] < la[i]) {
            c[k++] = lb[j++];
        } else {
            c[k++] = la[i++];
            j++;
        }
    }

    while (i < n) {
        c[k++] = la[i++];
    }

    while (j < m) {
        c[k++] = lb[j++];
    }

    printf("Set A: ");
    for (i = 0; i < n; i++) {
        printf("%d ", la[i]);
    }

    printf("\nSet B: ");
    for (i = 0; i < m; i++) {
        printf("%d ", lb[i]);
    }

    printf("\nUnion set C: ");
    for (i = 0; i < k; i++) {
        printf("%d ", c[i]);
    }

    return 0;
}