C ++ 类 | 类与函数（Function）_5

类与函数的例子

我喜欢看代码（当然有必要我也会写），所以我会直接上码，找出一些关键点来分析：

class Student
{
    public:
    int studentID;
    int grades[10];
 
    void setStudentID(int inID)
    {
        studentID = inID;
    }
 
    int getStudentID()
    {
        return studentID;
    }
 
    void setGrade(int gradeNumber, int gradeIn)
    {
        grades[gradeNumber] = gradeIn;
    }
 
    int * getGrades()
    {
        return grades;
    }
 
    int getGrade(int gradeNumber)
    {
        return grades[gradeNumber];
    }
 
    void printGrades()
    {
        std::cout<<"StudentID = "<"\n";
        for(int i = 0; i < 10; i++)
        {
            std::cout<<"\t"<"\n";
        }
    }
 
 
    int sortGrades()
    {
    //sort ascending
    for(int i = 0; i < 10; i++)
    {
        for(int j = 0; j < 9 - i; j++)
            {
                if(grades[j] > grades[j + 1])
                {
                    int temp;
                    temp=grades[j];
                    grades[j]=grades[j + 1];
                    grades[j + 1]=temp;
                }
            }
    }
    }
    int getMin()
    {
        sortGrades();
        //std::cout<<"in class min"<
        return grades[9];
    }
 
    int getMax()
    {
        sortGrades();
        //std::cout<<"in class max"<
        return grades[0];
    }
 
    float getAverageGrade()
    {
        float sum = 0;