#include <stdio.h>
 
void sort(int arr[], int n) {
    int i, j, temp;
    for (i = 0; i < n-1; i++) {
        for (j = 0; j < n-1-i; j++) {
            if (arr[j] > arr[j+1]) {
                temp = arr[j];
                arr[j] = arr[j+1];
                arr[j+1] = temp;
            }
        }
    }
}
 
int main() {
    int nums[7];
    int i;
 
    printf("请输入7个整数：\n");
    for (i = 0; i < 7; i++) {
        scanf("%d", &nums[i]);
    }
 
    sort(nums, 7);
 
    printf("排序后的数组：");
    for (i = 0; i < 7; i++) {
        printf("%d ", nums[i]);
    }
    printf("\n");
    printf("中值为：%d\n", nums[3]);
 
    return 0;
}

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