W3School TIY Editor

#include <iostream> using namespace std; int main() { try { int age = 15; if (age >= 18) { cout << "访问已授权 - 您已满足年龄要求。"; } else { throw (age); } } catch (int myNum) { cout << "访问被拒绝 - 您必须年满 18 周岁。\n"; cout << "当前年龄: " << myNum; } return 0; }