学生成绩的程序

写一个统计学生成绩的程序。分别用子函数求出：（1）输入n个学生m门功课的成绩(2)每个学生的平均分；(3)每门功课的平均分；(4)找出最高分所对应的学生和功课。

要求：（1）由四个单独的子函数完成上述功能

（2）用动态存储分配思想完成数组的定义

代码：

#include

#include

#include

using namespace std;

struct Course {

string c_name;

int c_number;

float m_score;

Course(){}

Course(string name, int number, float score) {

if(name != " " && number > 0)

{

c_name = name; c_number = number; m_score = score;

}

else

cout << "Error!!!" << endl;

}

}*p_course;

struct Student {

string m_name;

int m_number;

Course * p_course;

Student(){}

Student(string name, int number, Course *course) {

if(name != " " && number > 0)

{

m_name = name; m_number = number; p_course=course;

}

else

cout << "Error!!!" << endl;

}

}*p_student;

int stu_n, cou_m;

void printStudentInformation()

{

int n,m,i,j;

cout << "Please input the number of student￡o" << endl;

cin >> n;

cout << "Please input the course of student: " << endl;

cin >> m;

Student *p_stu = new Student[n];

Course *p_cou = new Course[m];

for( i=0; i

p_stu[i].p_course = new Course[m];

cout << "Please input number and name of every student￡o" << endl;

for( i=0; i

cin >> p_stu[i].m_number >> p_stu[i].m_name;

cout << "Please input number and name of every course￡o" << endl;

for( i=0; i

cin >> p_cou[i].c_number >> p_cou[i].c_name;

cout << "Please input course garde of student: " << endl;

cout << endl;

cout <<"*********************************************************" << endl;

for( i=0; i

cout << " " << p_cou[i].c_name;

cout << endl;

for( i=0 ;i

{

cout << p_stu[i].m_name << " ";

for( j=0; j

cin >> p_stu[i].p_course[j].m_score;

}

cout << endl;

cout <<"*********************************************************" << endl;

p_student = p_stu;

p_course = p_cou;

stu_n = n;

cou_m = m;

}

void getStudentAverage()

{

int i,j;

float *p_average=new float[stu_n];

float sum=0;

for( i=0; i

{

for( j=0; j

{

sum+=p_student[i].p_course[j].m_score;

}

p_average[i] = sum/cou_m;

sum=0;

}

cout << fixed;

cout.precision(1);

cout <<"*********************************************************" << endl;

cout << endl;

cout << "Name " << "Number " << "AverageGrade " << endl;

cout << setiosflags(ios::left);

for( i = 0; i < stu_n ; i++)

cout<< setw(15) << p_student[i].m_name << setw(10) << p_student[i].m_number << setw(12) << p_average[i] << endl;

cout << endl;

cout <<"*********************************************************" << endl;

cout << endl;

}

void getCourseaver()

{

int i,j;

float *p_couAver= new float[cou_m];

float sum = 0;

for( i=0; i

{

for(j=0; j

sum += p_student[j].p_course[i].m_score;

p_couAver[i] = sum/stu_n;

sum = 0;

}

cout << "The average grade of course: " << endl;

cout <<"*********************************************************" << endl;

cout << endl;

for( i=0; i

cout << p_course[i].c_name << " ";

cout << endl;

cout << fixed ;

cout.precision(1);

for( i=0; i

cout << setw(9) << p_couAver[i];

cout << endl;

cout <<"*********************************************************" << endl;

cout << endl;

}

void findBest()

{

int i,j;

float max = 0;

int stu_i, cou_j;

for( i=0; i

for( j=0; j

if(p_student[i].p_course[j].m_score > max)

{

max = p_student[i].p_course[j].m_score;

stu_i=i;

cou_j=j;

}

cout << "Student information of high grade: " << endl;

cout <<"*********************************************************" << endl;

cout << endl;

cout << setiosflags(ios::left);

cout << "Grade " << " Source " << "Name " << "Number " << endl;

cout<< setw(8) << p_student[stu_i].p_course[cou_j].m_score << setw(12) << p_course[cou_j].c_name << setw(14)<< p_student[stu_i].m_name << setw(8) << p_student[stu_i].m_number << endl;

cout << endl;

cout <<"*********************************************************" << endl;

cout << endl;

}

int main()

{

int kind;

cout << endl;

cout << " ************************************" << endl << endl;

cout << endl;

cout << " 1. Input information of student " << endl << endl;

cout << endl;

cout << " 2. All of students average grade " << endl << endl;

cout << endl;

cout << " 3. All of source average grade " << endl << endl;

cout << endl;

cout << " 4. High grade " << endl << endl;

cout << endl;

cout << " 0. Quit " << endl << endl;

cout << endl;

cout << " ************************************" << endl;

cout << endl;

do

{

cout << "Input the number of your choise: " ;

cin >> kind;

cout << endl;

if(kind > 4 || kind < 0)

cout << "Input error @ please again!!!" << endl;

switch(kind)

{

case 1:

printStudentInformation();

break;

case 2:

getStudentAverage();

break;

case 3:

getCourseaver();

break;

case 4:

findBest();

break;

}

}while( kind != 0 );

return 0;

}