using namespace std;int main() { int day = 4; switch (day) { case 1: cout << "星期一"; break; case 2: cout << "星期二"; break; case 3: cout << "星期三"; break; case 4: cout << "星期四"; break; case 5: cout << "星期五"; break; case 6: cout << "星期六"; break; case 7: cout << "星期日"; break; } return 0;}