W3School TIY Editor

#include <iostream>

#include <set>

using namespace std;

​

int main() {

  // 创建存储字符串的集合 cars

  set<string> cars = {"Volvo", "BMW", "Ford", "Tesla"};

​

  // 移除元素

  cars.erase("Volvo");

  cars.erase("Tesla");

  // 打印集合元素

  for (string car : cars) {

    cout << car << "\n";

  }

  return 0;

}