Problem B: 我们来做个Student类吧！

 

Problem B: 我们来做个Student类吧！

Time Limit: 1 Sec  Memory Limit: 128 MB
Submit: 1929  Solved: 1035
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Description

请定义一个Student类，有4个属性：

1.char *name：姓名。

2.int numOfScores：课程数量

3.int *scores：所有课程的成绩。

4.int id：学生的编号。

只有3个方法：

1. 构造函数

2.析构函数

3.void Student::showStudent()方法：用于输出学生的信息。

请根据样例输出，写出该类的实现。

 

Input

输入分为多行。

第一行包含3个正整数M，N和P：其中M表明之后输入的测试用例数量；N表示每个人姓名的最大长度；P表示学生学习的课程的数量。

之后有M行，包含一个学生姓名（没有任何空白符）、P门课程的成绩。

 

Output

见样例。

注意：所有的输出两两之间用一个空格隔开，且每行输出的首尾都没有空格。

 

Sample Input

3 10 5
Tom 60 61 72 56 89
Jack 99 100 98 89 77
Mary 88 88 88 88 88

　　

Sample Output

A student whose name is "Tom" and id is 1 is created!
This student is "Tom" whose id is 1.
This student's scores are: 60 61 72 56 89
A student whose name is "Tom" and id is 1 is erased!
A student whose name is "Jack" and id is 2 is created!
This student is "Jack" whose id is 2.
This student's scores are: 99 100 98 89 77
A student whose name is "Jack" and id is 2 is erased!
A student whose name is "Mary" and id is 3 is created!
This student is "Mary" whose id is 3.
This student's scores are: 88 88 88 88 88
A student whose name is "Mary" and id is 3 is erased!

　　

HINT

 

Append Code

append.cc, 

int main()
{
    int cases;
    char *str;
    int maxLenOfString, numOfCourses;
    int *scores;

    cin>>cases>>maxLenOfString>>numOfCourses;
    str = new char[maxLenOfString + 1];
    scores = new int[numOfCourses];
    for (int i = 0; i < cases; i++)
    {
        cin>>str;
        for (int j = 0; j < numOfCourses; j++)
            cin>>scores[j];
        Student stu(str,scores,numOfCourses);
        stu.showStudent();
    }
    return 0;
}

　　

#include <iostream>
using namespace std;
class Student
{
public :
    string name;
    int numOfScores;
    int *scores;
    static int id;
    Student(string arr, int *num, int sum):name(arr),numOfScores(sum)
    {
        id++;
        scores= new int[sum];
        for(int i=0; i<sum; i++)
            scores[i]=num[i];
        cout<<"A student whose name is "<<name<<" and id is "<<id<<" is created!"<<endl;
    }
    void showStudent()
    {
        cout<<"This student is \""<<name<<"\" whose id is "<<id<<"."<<endl;
        cout<<"This student's scores are: ";
        for(int i=0; scores[i]!='\0'; i++)
            cout<<" "<<scores[i];
            cout<<endl;
    }
    ~Student()
    {
        cout<<"A student whose name is "<<name<<" and id is "<<id<<" is erased!"<<endl;
    }

};
int Student::id=0;
int main()
{
    int cases;
    char *str;
    int maxLenOfString, numOfCourses;
    int *scores;

    cin>>cases>>maxLenOfString>>numOfCourses;
    str = new char[maxLenOfString + 1];
    scores = new int[numOfCourses];
    for (int i = 0; i < cases; i++)
    {
        cin>>str;
        for (int j = 0; j < numOfCourses; j++)
            cin>>scores[j];
        Student stu(str,scores,numOfCourses);
        stu.showStudent();
    }
    return 0;
}