在 C++ 中,你可以使用 clear()
成员函数来清空一个 set
#include#include int main() { std::set my_set = {1, 2, 3, 4, 5}; std::cout << "Before clearing: " << my_set << std::endl; my_set.clear(); std::cout << "After clearing: " << my_set << std::endl; return 0; }
输出结果:
Before clearing: {1, 2, 3, 4, 5} After clearing: {}