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Commit 43e1ce64 authored by Pelotrio's avatar Pelotrio
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Course.cpp
+ 74
− 28
View file @ 43e1ce64
......@@ -3,46 +3,47 @@
#include <iostream>
Course::Course(std::string name) : name(std::move(name)) {
students = nullptr;
firstStudent = nullptr;
}
void Course::addStudent(std::string lastName, std::string firstName) {
auto *newStudent = new Student(lastName, firstName);
if (students == nullptr) {
students = newStudent;
void Course::addStudent(Student *newStudent) {
if (firstStudent == nullptr) {
firstStudent = newStudent;
lastStudent = newStudent;
} else {
Student *currentStudent = students;
while (currentStudent->getNextStudent() != nullptr) {
currentStudent = currentStudent->getNextStudent();
}
currentStudent->setNextStudent(newStudent);
lastStudent->setNextStudent(newStudent);
newStudent->setPreviousStudent(lastStudent);
lastStudent = newStudent;
}
}
void Course::deleteStudent(int matriculationNumber) {
if (students == nullptr) {
if (firstStudent == nullptr) {
return;
}
if (students->getMatriculationNumber() == matriculationNumber) {
auto *temp = students;
students = students->getNextStudent();
delete temp;
} else {
Student *currentStudent = students;
while (currentStudent->getNextStudent() != nullptr &&
currentStudent->getNextStudent()->getMatriculationNumber() != matriculationNumber) {
currentStudent = currentStudent->getNextStudent();
Student *currentStudent = firstStudent;
while (currentStudent != nullptr && currentStudent->getMatriculationNumber() != matriculationNumber) {
currentStudent = currentStudent->getNextStudent();
}
if (currentStudent != nullptr) {
if (currentStudent->getPreviousStudent() != nullptr) {
currentStudent->getPreviousStudent()->setNextStudent(currentStudent->getNextStudent());
}
if (currentStudent->getNextStudent() != nullptr) {
auto *temp = currentStudent->getNextStudent();
currentStudent->setNextStudent(temp->getNextStudent());
delete temp;
currentStudent->getNextStudent()->setPreviousStudent(currentStudent->getPreviousStudent());
}
if (currentStudent == firstStudent) {
firstStudent = currentStudent->getNextStudent();
}
if (currentStudent == lastStudent) {
lastStudent = currentStudent->getPreviousStudent();
}
delete currentStudent;
}
}
void Course::displayStudent(int matriculationNumber) {
Student *currentStudent = students;
Student *currentStudent = firstStudent;
while (currentStudent != nullptr && currentStudent->getMatriculationNumber() != matriculationNumber) {
currentStudent = currentStudent->getNextStudent();
}
......@@ -54,16 +55,61 @@ void Course::displayStudent(int matriculationNumber) {
}
}
Student *Course::getStudent(int matriculationNumber) {
Student *currentStudent = firstStudent;
while (currentStudent != nullptr && currentStudent->getMatriculationNumber() != matriculationNumber) {
currentStudent = currentStudent->getNextStudent();
}
if (currentStudent != nullptr) {
return currentStudent;
}
return nullptr;
}
void Course::displayStudents() {
Student *currentStudent = students;
// Display the firstStudent in the course in a table.
std::cout << "Name\t\t| Vorname\t\t| Matrikelnummer" << std::endl;
std::cout << "--------------------------------------------" << std::endl;
Student *currentStudent = firstStudent;
while (currentStudent != nullptr) {
std::cout << "Student: " << currentStudent->getFirstName() << " " << currentStudent->getLastName()
<< std::endl;
std::cout << currentStudent->getFirstName() << "\t\t\t" << currentStudent->getLastName() << "\t\t\t"
<< currentStudent->getMatriculationNumber() << std::endl;
currentStudent = currentStudent->getNextStudent();
}
}
void Course::displayCourse() {
std::cout << "Course name: " << name << std::endl;
sort();
displayStudents();
}
\ No newline at end of file
}
void Course::sort() {
if (firstStudent == nullptr) {
return;
}
Student *currentStudent = firstStudent->getNextStudent();
while (currentStudent != nullptr) {
Student *tempStudent = currentStudent;
while (tempStudent->getPreviousStudent() != nullptr &&
tempStudent->getPreviousStudent()->getLastName() > tempStudent->getLastName()) {
// swap tempStudent and prevStudent
if (tempStudent->getPreviousStudent() == firstStudent) firstStudent = tempStudent;
if (tempStudent == lastStudent) lastStudent = tempStudent->getPreviousStudent();
tempStudent->getPreviousStudent()->setNextStudent(tempStudent->getNextStudent());
if (tempStudent->getNextStudent() != nullptr)
tempStudent->getNextStudent()->setPreviousStudent(tempStudent->getPreviousStudent());
tempStudent->setNextStudent(tempStudent->getPreviousStudent());
tempStudent->setPreviousStudent(tempStudent->getPreviousStudent()->getPreviousStudent());
if (tempStudent->getPreviousStudent() != nullptr)
tempStudent->getPreviousStudent()->setNextStudent(tempStudent);
tempStudent->getNextStudent()->setPreviousStudent(tempStudent);
}
currentStudent = currentStudent->getNextStudent();
}
}
std::string Course::getName() const {
return name;
}
Course.h
+ 9
− 2
View file @ 43e1ce64
......@@ -7,12 +7,13 @@
class Course {
private:
std::string name;
Student *students;
Student *firstStudent;
Student *lastStudent;
public:
explicit Course(std::string name);
void addStudent(std::string lastName, std::string firstName);
void addStudent(Student *student);
void deleteStudent(int matriculationNumber);
......@@ -21,6 +22,12 @@ public:
void displayStudents();
void displayCourse();
std::string getName() const;
void sort();
Student *getStudent(int matriculationNumber);
};
#endif
Student.cpp
+ 13
− 13
View file @ 43e1ce64
#include "Student.h"
#include <random>
#include <set>
Student::Student(std::string lastName, std::string firstName) : lastName(lastName), firstName(firstName),
matriculationNumber(generateMatriculationNumber()) {
nextStudent = nullptr;
previousStudent = nullptr;
}
std::string Student::getLastName() const {
......@@ -27,15 +26,16 @@ void Student::setNextStudent(Student *nextStudent) {
this->nextStudent = nextStudent;
}
Student *Student::getPreviousStudent() const {
return previousStudent;
}
void Student::setPreviousStudent(Student *previousStudent) {
this->previousStudent = previousStudent;
}
int Student::generateMatriculationNumber() {
static std::random_device rd;
static std::mt19937 generator(rd());
static std::uniform_int_distribution<int> distribution(100000, 999999);
static std::set<int> usedNumbers;
int matriculationNumber;
do {
matriculationNumber = distribution(generator);
} while (usedNumbers.count(matriculationNumber) > 0);
usedNumbers.insert(matriculationNumber);
return matriculationNumber;
}
\ No newline at end of file
// Generate the matriculation number starting from 1000000 and counting up.
static int matriculationNumber = 1000000;
return matriculationNumber++;
}
Student.h
+ 5
− 0
View file @ 43e1ce64
......@@ -9,6 +9,7 @@ private:
std::string firstName;
int matriculationNumber;
Student *nextStudent;
Student *previousStudent;
public:
Student(std::string lastName, std::string firstName);
......@@ -21,8 +22,12 @@ public:
Student *getNextStudent() const;
Student *getPreviousStudent() const;
void setNextStudent(Student *nextStudent);
void setPreviousStudent(Student *previousStudent);
static int generateMatriculationNumber();
};
......
main.cpp
+ 70
− 12
View file @ 43e1ce64
#include <iostream>
#include <set>
#include <algorithm>
#include <vector>
#include "Course.h"
int main() {
Course *course = nullptr;
std::vector<Course *> courses;
bool quit = false;
while (!quit) {
std::cout << "1. Create course" << std::endl;
std::cout << "2. Add student" << std::endl;
std::cout << "3. Display student" << std::endl;
std::cout << "4. Delete student" << std::endl;
std::cout << "5. Display course" << std::endl;
std::cout << "6. Quit" << std::endl;
std::cout << "3. Add existing student" << std::endl;
std::cout << "4. Display student" << std::endl;
std::cout << "5. Remove student" << std::endl;
std::cout << "6. Delete student" << std::endl;
std::cout << "7. Display course" << std::endl;
std::cout << "8. Display all courses" << std::endl;
std::cout << "9. Quit" << std::endl;
std::cout << "Enter your choice: ";
int choice;
std::cin >> choice;
std::string name, lastName, firstName;
std::string name, lastName, firstName, courseName;
int matriculationNumber;
switch (choice) {
case 1:
std::cout << "Enter course name: ";
std::cin.ignore();
std::getline(std::cin, name);
course = new Course(name);
courses.push_back(new Course(name));
break;
case 2:
std::cout << "Enter student's first name: ";
std::cin >> firstName;
std::cout << "Enter student's last name: ";
std::cin >> lastName;
course->addStudent(lastName, firstName);
std::cout << "Enter course name: ";
std::cin >> courseName;
for (auto *course: courses) {
if (course->getName() == courseName) {
course->addStudent(new Student(lastName, firstName));
}
}
break;
case 3:
std::cout << "Enter student's matriculation number: ";
std::cin >> matriculationNumber;
course->displayStudent(matriculationNumber);
std::cout << "Enter course name: ";
std::cin >> courseName;
for (auto *course: courses) {
if (course->getName() == courseName) {
Student *student = course->getStudent(matriculationNumber);
if (student != nullptr) {
course->addStudent(student);
}
}
}
break;
case 4:
std::cout << "Enter student's matriculation number: ";
std::cin >> matriculationNumber;
course->deleteStudent(matriculationNumber);
for (auto *course: courses) {
course->displayStudent(matriculationNumber);
}
break;
case 5:
course->displayCourse();
std::cout << "Enter student's matriculation number: ";
std::cin >> matriculationNumber;
std::cout << "Enter course name: ";
std::cin >> courseName;
for (auto *course: courses) {
if (course->getName() == courseName) {
course->deleteStudent(matriculationNumber);
}
}
break;
case 6:
std::cout << "Enter student's matriculation number: ";
std::cin >> matriculationNumber;
// Delete student from all courses
for (auto *course: courses) {
course->deleteStudent(matriculationNumber);
}
break;
case 7:
std::cout << "Enter course name: ";
std::cin >> courseName;
for (auto *course: courses) {
if (course->getName() == courseName) {
course->displayCourse();
}
}
break;
case 8:
std::cout << "Courses:" << std::endl;
for (auto *course: courses) {
course->displayCourse();
}
break;
case 9:
quit = true;
break;
default:
......@@ -53,6 +109,8 @@ int main() {
break;
}
}
delete course;
for (auto *course: courses) {
delete course;
}
return 0;
}
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