编写一个void sort(int *x,int n)实现将x数组中的n个数据从大到小 排序。n及数组元素在主函数中输入。将结果显示在屏幕上并输出到文件p9_1.out中 -Write a void sort (int* x, int n) to achieve the x n array data in descending order. n and array elements entered in the main fu