W3School TIY Editor

#include <iostream> #include <set> using namespace std; int main() { // 创建存储整数的集合 numbers (按降序排列) set<int, greater<int>> numbers = {1, 7, 3, 2, 5, 9}; // 打印集合元素 for (int num : numbers) { cout << num << "\n"; } return 0; }