编辑器
#include <iostream> #include <vector> using namespace std; int main() { vector<string> cars = {"Volvo", "BMW", "Ford", "Mazda"}; cout << "Size before: " << cars.size() << "\n"; cars.clear(); cout << "Size after: " << cars.size() << "\n"; return 0; }
Size before: 4
Size after: 0
编辑器