C++程式片段如下： class Student { private: int score; public: void setScore(int n) { if(n>=90) score=100; else if(n>=60 && n<90) score=n+5; else score=n+3; } int getScore () { return score; } void showScore() { cout << getScore() << endl; } }; 若執行以下敘述會得到什麼結果？ Student stu; stu.setScore(80); stu.showScore();