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NEED HELP WITH MY C++ ASSIGNMENT, IT NEEDS TO BE SOLVED USING LISTS #include <iostream> #include...

NEED HELP WITH MY C++ ASSIGNMENT, IT NEEDS TO BE SOLVED USING LISTS
#include <iostream>
#include <list>
#include <map>
#include <string>
using namespace std;

class course {
public:
        string name;
        int section;
        int credits;
        course() {}
        course(string n, int s, int c) { name = n; section = s; credits = c; }
        //Add additional needed member functions and implement them.
        //You also need to implement some needed functions for overloading operator<< .
};
//Implement the following functions

void add_student(map<int, map<int, list<course*>* > >& DB, int id);
void remove_student(map<int, map<int, list<course*>* > >& DB, int id);
void add_course(map<int, map<int, list<course*>* > >& DB, int semester, int id, course c); //20171 Spring semester of 2017; 20172: Fall semester of 2017

void drop_course(map<int, map<int, list<course*>* > >& DB, int semester, int id, course c);
void print_student_semester_courses(map<int, map<int, list<course*>* > >& DB, int semester, int id);
void print_student_all_courses(map<int, map<int, list<course*>* > >& DB, int id);
void print_DB(map<int, map<int, list<course*>* > >& DB);

//For the print funcitons, you need to add more fucntions to overload operator<<.
//for example print_DB is simply cout << DB;
//Courses in a semeste are sorted alphabetically.

int main() {
        //Do not change code for main function
        map<int, map<int, list <course*>*> > DB;
        add_student(DB, 11111);
        course C1("CIS554", 1, 3), C2("CSE674", 1, 3), C3("MAT296", 8, 4), C4("WRT205", 5, 3);

        add_course(DB, 20171, 11111, C1);
        add_course(DB, 20171, 11111, C4);
        add_course(DB, 20171, 11111, C3);
        add_course(DB, 20171, 11111, C2);
        print_student_semester_courses(DB, 20171, 11111);

        drop_course(DB, 20171, 11111, C1);
        print_student_semester_courses(DB, 20171, 11111);

        add_course(DB, 20172, 11111, C2);
        add_course(DB, 20172, 11111, C4);
        add_course(DB, 20172, 11111, C3);
        add_course(DB, 20172, 11111, C1);
        print_student_all_courses(DB, 11111);

        add_student(DB, 11112);
        add_course(DB, 20171, 11112, C2);
        add_course(DB, 20171, 11112, C4);
        add_course(DB, 20171, 11112, C3);
        add_course(DB, 20171, 11112, C1);
        print_student_semester_courses(DB, 20171, 11112);

        add_course(DB, 20172, 11112, C2);
        add_course(DB, 20172, 11112, C4);
        add_course(DB, 20172, 11112, C3);
        add_course(DB, 20172, 11112, C1);
        print_student_semester_courses(DB, 20172, 11112);
        print_student_all_courses(DB, 11112);
        print_DB(DB);
        remove_student(DB, 11111);
        print_DB(DB);
        getchar();
        getchar();
        return 0;
}

void add_student(map<int, map<int, list<course*>* >>& DB, int id) {


}

void remove_student(map<int, map<int, list<course*>* >>& DB, int id) {

}


void add_course(map<int, map<int, list<course*>* >>& DB, int semester, int id, course c) {

}

void drop_course(map<int, map<int, list<course*>* >>& DB, int semester, int id, course c) {

}

void print_student_semester_courses(map<int, map<int, list<course*>* >>& DB, int semester, int id) {

}
void print_student_all_courses(map<int, map<int, list<course*>* >>& DB, int id) {

}

void print_DB(map<int, map<int, list<course*>* >>& DB) {

}
//Some additional functions for overloading operator<<


/*
//Your output needs to keep the identical format
//Sample Screenshot
student id = 11111
semester = 20171
CIS554 1 3  CSE674 1 3  MAT296 8 4  WRT205 5 3

student id = 11111
semester = 20171
CSE674 1 3  MAT296 8 4  WRT205 5 3

student id = 11111
semester = 20171
CSE674 1 3  MAT296 8 4  WRT205 5 3
semester = 20172
CIS554 1 3  CSE674 1 3  MAT296 8 4  WRT205 5 3

student id = 11112
semester = 20171
CIS554 1 3  CSE674 1 3   MAT296 8 4  WRT205 5 3

student id = 11112
semester = 20172
CIS554 1 3  CSE674 1 3  MAT296 8 4  WRT205 5 3

student id = 11112
semester = 20171
CIS554 1 3  CSE674 1 3  MAT296 8 4  WRT205 5 3
semester = 20172
CIS554 1 3  CSE674 1 3  MAT296 8 4  WRT205 5 3

student id = 11111
semester = 20171
CSE674 1 3  MAT296 8 4  WRT205 5 3
semester = 20172
CIS554 1 3  CSE674 1 3  MAT296 8 4  WRT205 5 3
student id = 11112
semester = 20171
CIS554 1 3  CSE674 1 3  MAT296 8 4  WRT205 5 3
semester = 20172
CIS554 1 3  CSE674 1 3  MAT296 8 4  WRT205 5 3

student id = 11112
semester = 20171
CIS554 1 3  CSE674 1 3  MAT296 8 4  WRT205 5 3
semester = 20172
CIS554 1 3  CSE674 1 3  MAT296 8 4  WRT205 5 3
*/
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Homework Answers

Answer #1

CODE:
#include <iostream>
#include <list>
#include <map>
#include <string>
using namespace std;

class course {
public:
   string name;
   int section;
   int credits;
   course() {}
   course(string n, int s, int c) { name = n; section = s; credits = c; }
   //Add additional needed member functions and implement them.
   //You also need to implement some needed functions for overloading operator<< .
   friend ostream& operator << (ostream& out, const course& c);
};
//Implement the following functions

void add_student(map<int, map<int, list<course*>* > >& DB, int id);
void remove_student(map<int, map<int, list<course*>* > >& DB, int id);
void add_course(map<int, map<int, list<course*>* > >& DB, int semester, int id, course& c); //20171 Spring semester of 2017; 20172: Fall semester of 2017

void drop_course(map<int, map<int, list<course*>* > >& DB, int semester, int id, course& c);
void print_student_semester_courses(map<int, map<int, list<course*>* > >& DB, int semester, int id);
void print_student_all_courses(map<int, map<int, list<course*>* > >& DB, int id);
void print_DB(map<int, map<int, list<course*>* > >& DB);

//For the print funcitons, you need to add more fucntions to overload operator<<.
//for example print_DB is simply cout << DB;
//Courses in a semeste are sorted alphabetically.

int main() {
   //Do not change code for main function
   map<int, map<int, list <course*>*> > DB;
   add_student(DB, 11111);
   course C1("CIS554", 1, 3), C2("CSE674", 1, 3), C3("MAT296", 8, 4), C4("WRT205", 5, 3);

   add_course(DB, 20171, 11111, C1);
   add_course(DB, 20171, 11111, C4);
   add_course(DB, 20171, 11111, C3);
   add_course(DB, 20171, 11111, C2);
   print_student_semester_courses(DB, 20171, 11111);

   drop_course(DB, 20171, 11111, C1);
   print_student_semester_courses(DB, 20171, 11111);

   add_course(DB, 20172, 11111, C2);
   add_course(DB, 20172, 11111, C4);
   add_course(DB, 20172, 11111, C3);
   add_course(DB, 20172, 11111, C1);
   print_student_all_courses(DB, 11111);

   add_student(DB, 11112);
   add_course(DB, 20171, 11112, C2);
   add_course(DB, 20171, 11112, C4);
   add_course(DB, 20171, 11112, C3);
   add_course(DB, 20171, 11112, C1);
   print_student_semester_courses(DB, 20171, 11112);

   add_course(DB, 20172, 11112, C2);
   add_course(DB, 20172, 11112, C4);
   add_course(DB, 20172, 11112, C3);
   add_course(DB, 20172, 11112, C1);
   print_student_semester_courses(DB, 20172, 11112);
   print_student_all_courses(DB, 11112);
   print_DB(DB);
   remove_student(DB, 11111);
   print_DB(DB);
   getchar();
   getchar();
   return 0;
}

void add_student(map<int, map<int, list<course*>* >>& DB, int id) {

   map<int, list<course*>*> m;
   DB[id] = m;
}

void remove_student(map<int, map<int, list<course*>* >>& DB, int id) {
   DB.erase(id);
}


void add_course(map<int, map<int, list<course*>* >>& DB, int semester, int id, course& c) {
   if(nullptr == DB[id][semester])
   {
       list<course*>* l = new list<course*>();
       DB[id][semester] = l;
   }
   DB[id][semester]->push_back(&c);
}

void drop_course(map<int, map<int, list<course*>* >>& DB, int semester, int id, course& c) {
   DB[id][semester]->remove(&c);
}

void print_student_semester_courses(map<int, map<int, list<course*>* >>& DB, int semester, int id) {
   cout << "\nStudent Id : " << id;
   cout << "\nSemester : " << semester<<endl;

   for(course* c : *DB[id][semester])
   {
       cout << *c <<" ";
   }

   cout << endl ;

}
void print_student_all_courses(map<int, map<int, list<course*>* >>& DB, int id) {
   cout << "\nStudent Id : " << id;
   for (auto pair : DB[id])
   {
       cout << "\nSemester : " << pair.first << endl;
       for (course* c : *DB[id][pair.first])
       {
           cout << *c<<" ";
       }
   }
   cout << endl;
}

void print_DB(map<int, map<int, list<course*>* >>& DB) {
   for (auto stu : DB)
   {
       cout << "\nStudent Id : " << stu.first;
       for (auto pair : DB[stu.first])
       {
           cout << "\nSemester : " << pair.first<<endl;
           for (course* c : *DB[stu.first][pair.first])
           {
               cout << *c<<" ";
           }
       }
   }
   cout << endl ;
}
//Some additional functions for overloading operator<<
ostream& operator<<(ostream& out, const course& c)
{
   out << c.name << " " << c.section << " " << c.credits;
   return out;
}

OUTPUT:

Student Id : 11111 Semester : 20171 CIS554 1 3 WRT205 5 3 MAT296 84 CSE674 1 3 Student Id : 11111 Semester : 20171 WRT205 5 3

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Add a comment
Answer #2 
/ main program

#include <iostream>
using namespace std;
#include <cstring>

/*
   program:         studentID_PRG355X.221.LT1.cpp
   student:         student name here...
   student number:  123456789
   date:            april 12, 2022
   purpose:         solution to PRG355X Lab Test #2
*/

/*
   Your class declaration and member functions MUST be placed here...
*/

int main( ) {
   struct fish array[10] = { {"shark", 'S', 3187287.98}, {"eel", 'S', 7299.35},     {"trout", 'F', 5126.42},
                             {"bass", 'F', 1892.33},     {"sunfish", 'F', 192.25},  {"tuna", 'S', 87553.78},    {"catfish", 'F', 427.76},
                             {"muskee", 'F', 897.22},    {"striper", 'S', 1235.71}, {"guppy", 'F', 82.11} };

   Aquarium tank1(8);

   int i, rv;

   for(i=0; i<10; i++) {
      rv = tank.add(array[i]);
      if(rv)
         cout << "added fish " << i + 1 << endl;
      else
         cout << "could not add fish..." << endl;
   }

   tank1.feed( ); // increases all saltwater fish by 500 grams and all freshwater fish by 15 grams
   tank1.feed(1); // parameter used to differentiate between feed( ) function calls only
                  // this function results in the shark "eating" the sunfish!
   cout << "==========" << endl;
   cout << tank1; // displays all fish in the tank

   return 0;
}

/*
would display:
added fish 1
added fish 2
added fish 3
added fish 4
added fish 5
added fish 6
added fish 7
added fish 8
could not add fish...
could not add fish...
==========
shark S 3187995.23
eel S 7799.35
trout F 5141.42
bass F 1907.33
unclassified U 0.00
tuna S 88053.78
catfish F 442.76
muskee F 913.22
*/


source: c++
answered by: anonymous
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