修改

        if (randAttack == 1 && NPC1.HP != 0 && HUNTER1.HP != 0) {
            cout << "NPC ";
            NPC1.Attack();
            cout << "Hunter ";
            HUNTER1.UnderAttack(21, 60);
        }
        else if (randAttack == 2 && NPC1.HP != 0 && WARRIOR1.HP != 0) {
            cout << "NPC ";
            NPC1.Attack();
            cout << "Warrior ";
            WARRIOR1.UnderAttack(21, 60);
        }
        else if (randAttack == 3 && HUNTER1.HP != 0&& NPC1.HP != 0) {
            cout << "Hunter ";
            HUNTER1.Attack();
            cout << "NPC ";
            NPC1.UnderAttack(15, 63);
        }
        else if (randAttack == 4 && HUNTER1.HP != 0 && WARRIOR1.HP != 0) {
            cout << "Hunter ";
            HUNTER1.Attack();
            cout << "Warrior ";
            WARRIOR1.UnderAttack(15, 63);
        }
        else if (randAttack == 5 && WARRIOR1.HP != 0 && NPC1.HP !=0) {
            cout << "Warrior ";
            WARRIOR1.Attack();
            cout << "NPC ";
            NPC1.UnderAttack(27, 57);
        }
        else if (randAttack == 6 && WARRIOR1.HP != 0 && HUNTER1.HP) {

            cout << "Warrior ";
            WARRIOR1.Attack();
            cout << "Hunter ";
            HUNTER1.UnderAttack(27, 57);
        }
        else
        {
            continue;
        }