c++的一道程序题

发布网友发布时间：2023-10-10 19:15

共1个回答

热心网友时间：2024-12-04 00:41

#include<iomanip>
using namespace std;
class Person
{
   protected:
        string name;
        int age;
   public:
        Person()
        {
            ;
        }
        Person(string p_name)
        {
            age=0;
            name=p_name;
        }
        Person (string p_name, int p_age)
        {
            name=p_name;
            age=p_age;
        }
};
class Student:protected Person
{
    int ID;
    float cpp_count;

    public:
        float cpp_score;
        float cpp_grade;
    Student(string p_name,int id,int p_age,float score,float count):Person(p_name)
    {
        ID=id;
        cpp_score=score;
        cpp_count=count;
        cpp_grade=cpp_score * 0.9 + cpp_count * 2;
    }
    Student():Person()
    {
        ID=0;
        cpp_score=0;
        cpp_count=0;
        cpp_grade=cpp_score * 0.9 + cpp_count * 2;
    }
    void output()
    {
        cout<<ID<<" "<<name<<" "<<setiosflags(ios::fixed)<<setprecision(1)<<cpp_grade<<endl;
    }
};
class Teacher:protected Person
{
    int ID;
    Student s[100];
    int count;
    float average;
    float sum;
    public:
        Teacher(string p_name,int id,int p_age):Person(p_name,p_age)
        {
            ID=id;
            count=0;
            name=p_name;
            sum=0;
        }
        void add(Student s1)
        {
            s[count]=s1;
            count++;
            sum+=s1.cpp_grade;
        }
        void calculate()
        {
            average=sum/count;
        }
        void output()
        {
            int i;
            cout<<ID<<" "<<name<<" "<<count<<" "<<setiosflags(ios::fixed)<<setprecision(1)<<average<<endl;
            for(i=0;i<count;i++)
            {
                s[i].output();
            }
        }
};
int main()
{
    string name;
    int age,id;
    float score,count;
    cin>>name>>id>>age;
    Teacher teacher(name,id,age);
    cin>>name;
    for(;name[0]!='0';)
    {
        cin>>id>>age>>score>>count;
        Student student(name,id,age,score,count);
        teacher.add(student);
        cin>>name;
    }
    teacher.calculate();
    teacher.output();
    return 0;
}