要求如下，一个简单的学生课程系统。
我把代码发给你，根据代码用C#可视化就行。没学过C#,但现在需要用这个写，完全不会，临时学已经来不及了。
代码如下：
```c#
#include <iostream>
#include <string>
#include <vector>
#include <limits>
using namespace std;
class Student {
public:
Student(string id, string name, string sex)
: id_(id), name_(name), sex_(sex) {}
string GetId() const { return id_; }
string GetName() const { return name_; }
string GetSex() const { return sex_; }
private:
string id_; // 学生学号
string name_; // 学生姓名
string sex_; // 学生性别
};
class CourseScore {
public:
CourseScore(string courseName, float score)
: courseName_(courseName), score_(score) {}
string GetCourseName() const { return courseName_; }
float GetScore() const { return score_; }
private:
string courseName_; // 课程名称
float score_; // 成绩
};
class StudentCourseScore {
public:
StudentCourseScore(Student student)
: student_(student) {}
void AddCourseScore(CourseScore courseScore) {
courseScores_.push_back(courseScore);
}
Student GetStudent() const { return student_; }
vector<CourseScore> GetCourseScores() const { return courseScores_; }
private:
Student student_; // 学生信息
vector<CourseScore> courseScores_; // 课程成绩信息
};
void ByNameQuery(const vector<StudentCourseScore>& students) {
string targetName;
cout << "请输入要查询的学生姓名：";
cin >> targetName;
bool found = false;
for (const auto& studentCourseScore : students) {
Student student = studentCourseScore.GetStudent();
if (student.GetName() == targetName) {
found = true;
cout << "学号：" << student.GetId() << "，姓名：" << student.GetName() << "，性别：" << student.GetSex() << endl;
cout << "课程成绩信息：" << endl;
for (const auto& courseScore : studentCourseScore.GetCourseScores()) {
cout << "科目名称：" << courseScore.GetCourseName() << "，分数：" << courseScore.GetScore() << endl;
}
break;
}
}
if (!found) {
cout << "找不到指定的学生信息。" << endl;
}
}
void ByIdQuery(const vector<StudentCourseScore>& students) {
string targetId;
cout << "请输入要查询的学生学号：";
cin >> targetId;
bool found = false;
for (const auto& studentCourseScore : students) {
Student student = studentCourseScore.GetStudent();
if (student.GetId() == targetId) {
found = true;
cout << "学号：" << student.GetId() << "，姓名：" << student.GetName() << "，性别：" << student.GetSex() << endl;
cout << "课程成绩信息：" << endl;
for (const auto& courseScore : studentCourseScore.GetCourseScores()) {
cout << "科目名称：" << courseScore.GetCourseName() << "，分数：" << courseScore.GetScore() << endl;
}
break;
}
}
if (!found) {
cout << "找不到指定的学生信息。" << endl;
}
}
void ByCourseQuery(const vector<StudentCourseScore>& students) {
string targetCourse;
cout << "请输入要查询的科目名称：";
cin >> targetCourse;
bool found = false;
float maxScore = numeric_limits<float>::min();
float minScore = numeric_limits<float>::max();
string maxStudentName, minStudentName;
for (const auto& studentCourseScore : students) {
Student student = studentCourseScore.GetStudent();
for (const auto& courseScore : studentCourseScore.GetCourseScores()) {
if (courseScore.GetCourseName() == targetCourse) {
found = true;
if (courseScore.GetScore() > maxScore) {
maxScore = courseScore.GetScore();
maxStudentName = student.GetName();
}
if (courseScore.GetScore() < minScore) {
minScore = courseScore.GetScore();
minStudentName = student.GetName();
}
}
}
}
if (found) {
cout << "科目名称：" << targetCourse << "，最高分学生：" << maxStudentName << "，分数：" << maxScore << endl;
cout << "科目名称：" << targetCourse << "，最低分学生：" << minStudentName << "，分数：" << minScore << endl;
}
else {
cout << "找不到指定的科目信息。" << endl;
}
}
int main() {
int n;
cout<<"信息录入"<<endl
<< "请输入学生数目：";
cin >> n;
vector<StudentCourseScore> students;
for (int i = 0; i < n; ++i) {
string id, name, sex;
cout << "请输入第 " << i + 1 << " 个学生的学号、姓名和性别（格式：学号 姓名 性别）：";
cin >> id >> name >> sex;
Student student(id, name, sex);
int courseNum;
cout << "请输入课程数目：";
cin >> courseNum;
StudentCourseScore studentCourseScore(student);
for (int j = 0; j < courseNum; ++j) {
string courseName;
float score;
cout << "请输入第 " << j + 1 << " 门课程名称和分数（格式：课程名称 分数）：";
cin >> courseName >> score;
CourseScore courseScore(courseName, score);
studentCourseScore.AddCourseScore(courseScore);
}
students.push_back(studentCourseScore);
}
int choice;
bool found = false; // 声明并初始化 found 变量
string targetName = ""; // 声明并初始化 targetName 变量
do {
cout << "----------------------------------------------------------------------" << endl;
cout << "请选择查询方式：" << endl;
cout << "1. 通过姓名查询学生成绩" << endl;
cout << "2. 通过学号查询学生成绩" << endl;
cout << "3. 输出指定科目分数最高和最低的学生课程成绩信息" << endl;
cout << "4. 输出指定学生的科目分数最高和最低分" << endl;
cout << "5. 退出程序" << endl;
cout << "----------------------------------------------------------------------" << endl;
cin >> choice;
switch (choice) {
case 1:
ByNameQuery(students);
break;
case 2:
ByIdQuery(students);
break;
case 3:
ByCourseQuery(students);
break;
case 4:
// Add code for query by student
cout << "请输入要查询的学生姓名：";
cin >> targetName;
found = false; // 重置 found 变量
for (const auto& studentCourseScore : students) {
Student student = studentCourseScore.GetStudent();
if (student.GetName() == targetName) {
found = true;
cout << "学号：" << student.GetId() << "，姓名：" << student.GetName() << "，性别：" << student.GetSex() << endl;
cout << "科目分数最高：" << endl;
float maxScore = numeric_limits<float>::min();
string maxCourseName;
for (const auto& courseScore : studentCourseScore.GetCourseScores()) {
if (courseScore.GetScore() > maxScore) {
maxScore = courseScore.GetScore();
maxCourseName = courseScore.GetCourseName();
}
}
cout << "科目名称：" << maxCourseName << "，分数：" << maxScore << endl;
cout << "科目分数最低：" << endl;
float minScore = numeric_limits<float>::max();
string minCourseName;
for (const auto& courseScore : studentCourseScore.GetCourseScores()) {
if (courseScore.GetScore() < minScore) {
minScore = courseScore.GetScore();
minCourseName = courseScore.GetCourseName();
}
}
cout << "科目名称：" << minCourseName << "，分数：" << minScore << endl;
break;
}
}
if (!found) {
cout << "找不到指定的学生信息。" << endl;
}
break;
case 5:
cout << "退出程序。" << endl;
break;
default:
cout << "输入无效的选项。" << endl;
break;
}
} while (choice != 5);
return 0;
}
```
