void class_First_one() { int count1= 0; name = " Primary enginneering training"; teacher = "Mr.Li"; classroom = "Practice training building"; class_num =1.1 ; suit_grade =1 ; count1++; //调用成员函数，学生人数加1 cout << "The current number of select this class is :" << count1 << endl; }以这个作为例子给我代码

这个例子中，计数器 count1 定义在成员函数 class_First_one() 中，每次调用该函数时，计数器加一，表示有一个学生选择了该课程。下面是代码示例：

class MyClass {
public:
    void class_First_one() {
        static int count1 = 0; // 将计数器定义为静态变量，确保其生命周期与类对象相同
        name = "Primary engineering training";
        teacher = "Mr.Li";
        classroom = "Practice training building";
        class_num = 1.1;
        suit_grade = 1;
        count1++; // 调用成员函数，学生人数加1
        cout << "The current number of select this class is: " << count1 << endl;
    }
private:
    string name;
    string teacher;
    string classroom;
    float class_num;
    int suit_grade;
};

这样，每次调用 class_First_one() 函数时，都会输出当前选择该课程的学生人数。