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| // clearing unordered_set #include <iostream> #include <string> #include <unordered_set> int main () { std::unordered_set<std::string> myset = { "chair", "table", "lamp", "sofa" }; std::cout << "myset contains:"; for (const std::string& x: myset) std::cout << " " << x; std::cout << std::endl; myset.clear(); myset.insert("bed"); myset.insert("wardrobe"); myset.insert("nightstand"); std::cout << "myset contains:"; for (const std::string& x: myset) std::cout << " " << x; std::cout << std::endl; return 0; }
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