现要求用C++设计一个表示学生的类，里面有学生的三项成绩：计算机成绩、数学成绩、英语成绩，要求可以求总分、平均分、最高分、最低分，并且可以输出一个学生的完整信息，问：此类该如何设计？ 要求：1.根据题目要求设计学生类，除了成绩以外要包含学生ID、姓名、年龄 2.有一个默认无参的构造函数，和一个带参的构造函数，函数的成绩参数是缺省的 3.所有属性必须私有化 4.提供get和set方法用于访问类中的成员 5.设计输出学生信息的方法 6.编写调用测试语句

class Student{ private: int ID; string name; int age; float computerScore; float mathScore; float englishScore; public: Student(){ ID = 0; name = ""; age = 0; computerScore = 0.0; mathScore = 0.0; englishScore = 0.0; } Student(int id, string n, int a, float cs=0.0, float ms=0.0, float es=0.0){ ID = id; name = n; age = a; computerScore = cs; mathScore = ms; englishScore = es; } void setID(int id){ ID = id; } void setName(string n){ name = n; } void setAge(int a){ age = a; } void setComputerScore(float cs){ computerScore = cs; } void setMathScore(float ms){ mathScore = ms; } void setEnglishScore(float es){ englishScore = es; } int getID(){ return ID; } string getName(){ return name; } int getAge(){ return age; } float getComputerScore(){ return computerScore; } float getMathScore(){ return mathScore; } float getEnglishScore(){ return englishScore; } float getTotalScore(){ return computerScore + mathScore + englishScore; } float getAverageScore(){ return getTotalScore()/3.0; } float getMaxScore(){ float maxScore = computerScore; if (mathScore > maxScore){ maxScore = mathScore; } if (englishScore > maxScore){ maxScore = englishScore; } return maxScore; } float getMinScore(){ float minScore = computerScore; if (mathScore < minScore){ minScore = mathScore; } if (englishScore < minScore){ minScore = englishScore; } return minScore; } void printInfo(){ cout << "学生ID：" << ID << endl; cout << "姓名：" << name << endl; cout << "年龄：" << age << endl; cout << "计算机成绩：" << computerScore << endl; cout << "数学成绩：" << mathScore << endl; cout << "英语成绩：" << englishScore << endl; cout << "总分：" << getTotalScore() << endl; cout << "平均分：" << getAverageScore() << endl; cout << "最高分：" << getMaxScore() << endl; cout << "最低分：" << getMinScore() << endl; } }; int main(){ Student s1(1001, "ZhangSan", 18, 88.5, 90.0, 85.0); s1.printInfo(); return 0; }