DaniWeb IT Discussion Community - Help Needed on C++ assignment

//****************
//STUDENT.H
//***************

#ifndef _Student_HG_
#define _Student_HG_
#include <string>
#include <vector>

using std::string;

class Student
{
public:
Student( const string &, const string &, const string &, vector <Grade> &);//i should have an int and assign it to a vector instead of vector here?
~Student(); //Destructor
void setFirstName( const string & );//set first name
string getFirstName() const;

void setLastName( const string & );
string getLastName() const;

void setStudentNumber( const string & );
string getStudentNumber() const;

void printGrades( vector <Grade> &);

//void addGrade
vector <Grade> vecGrade;
private:
string firstName;
string lastName;
string studentNumber;

};
#endif

//**************************
//STUDENT.CPP
//*********************

#include <iostream>
using namespace std;
#include "Student.h"
//, const int &grade

struct Grade()
{
string assignmentName;
int assignmentGrade;
}

Student::Student( const string &first, const string &last, const string &snum , vector <Grade> &vG)
: firstName( first ), lastName( last ), studentNumber( snum )
{
Grade tempGrade = new Grade;
//start loop to input grades into vector<Grade> NOT WORKING
/*tempGrade.assignmentName = ;
tempGrade.assignmentGrade = ;
vecGrade.push_back(tempGrade);*/
}

Student::~Student()
{
}

void Student::setFirstName( const string &first)
{
firstName = first;
}

string Student::getFirstName() const
{
return firstName;
}

void Student::setLastName( const string &last)
{
lastName = last;
}

string Student::getLastName() const
{
return lastName;
}

void Student::setStudentNumber(const string &snum)
{
studentNumber = snum;
}

string Student::getStudentNumber() const
{
return studentNumber;
}

void Student::printGrades()
{
for (vector<Grade>::iterator it = vecGrade.begin();
it != vecGrade.end(); it++)
{
cout << (*it).assignmentName << " "
<< (*it).assignemtnGrade << endl;//DONT KNOW what todo...This doesnt work
}
}

//**************
//Main
//***********

#include <iostream>
#include <iomanip>
#include <vector>
#include <string>
#include <fstream>
#include "Student.h"

using namespace std;

int enterChoice()
{
cout << "\nEnter your choice" << endl
<< "1 - Add a student" << endl
<< "2 - Modify a student" << endl
<< "3 - Delete a student" << endl
<< "0 - Exit\n" << endl << endl << endl;

int menuChoice;
cin >> menuChoice;
return menuChoice;
}

int enterModChoice()
{
cout << "\nEnter your choice" << endl
<< "1 - Change student's first name" << endl
<< "2 - Change student's last name" << endl
<< "3 - Change student's student number" << endl
<< "4 - change students assignment/grades" << endl
<< "0 - Exit\n" << endl << endl << endl;

int menuChoice;
cin >> menuChoice;
return menuChoice;
}

void printOut(vector<Student> &vecStud)
{
cout << "Student" << setw(25) << "Grade" <<endl;
for (vector<Student>::iterator it = vecStud.begin();
it != vecStud.end(); it++)
{
cout << (*it).getFirstName() << " " <<
(*it).getLastName() << " :" <<
endl;
}

}

int main()
{
//Load up the student data text file into vector
vector < Student > vecStudent;
ifstream myFile("studentData.txt");
string fname;
string lname;
string ssn;

while (myFile >> fname >> lname >> ssn)
{
Student tempStu(fname,lname,ssn);
vecStudent.push_back(tempStu);
}
myFile.close;

printOut(vecStudent);

int choice;
int choice2;
string result;
while ( ( choice = enterChoice() ) != 0)
{

switch ( choice)
{
case 1:
{//add a student

cout << endl << endl << endl;
cout << "Adding student...." << endl << endl << endl;
cout << "What is the student's first name? : ";
cin >> fname;
cout << endl << "What is the student's last name? : ";
cin >> lname;
cout << endl << "What is the student's student number? : ";
cin >> ssn;
Student tempStu(fname,lname,ssn);

vecStudent.push_back(tempStu);

//How many assignments/grades do you want to put in?
//loop inputting grades into Student grade vector

printOut(vecStudent);
break;
}
case 2:
{
//modify and student
cout << "Modifing a student......" << endl << endl << endl;
cout << "What is the student's student number\n who you want to modify?" << endl << endl;
cin >> ssn;

//search for student
for (vector<Student>::iterator it = vecStudent.begin();
it != vecStudent.end(); it++)
{
//THIS DOESNT WORK*******
if (!strcmp((*it).getStudentNumber, ssn))
{
cout << "Student found......" << endl;

//display menu for changing a student's stats
while ( ( choice2 = enterModChoice() ) != 0)
{
switch ( choice2 )
{
case 1:
//set/change students first name
cout << "Enter student's new first name: ";
cin >> result;
(*it).setFirstName( result );
break;
case 2:
//set/change student's last name
cout << "Enter student's new last name: ";
cin >> result;
(*it).setLastName( result );
break;
case 3:
//set/change student's student number
cout << "Enter student's new student number: ";
cin >> result;
(*it).setStudentNumber( result );
break;
case 4:
//print off assignment list (vector of struct Grade's inside Student) w/grades
(*it).printGrades();
//Bring up another menu for what assignment to change

//enter assignemnt # 1-10
// change 1: name or 2: grade
// if
break;
case 0:

break;
default:
cout << "You entered a wrong number" << endl;
break;
}
}
}

else
{
cout << "Sorry, either the number was incorrectly inputted"
<< "\n or the student does not exist." << endl;

}

}
break;
}
case 3:
{
//delete a student
cout << "Deleting a student......" << endl << endl << endl;
cout << "What is the student's student number\n who you want to delete?" << endl << endl;
cin >> ssn;

for (vector<Student>::iterator it = vecStudent.begin();
it != vecStudent.end(); it++)
{
//THIS DOESNT WORK
if ( !strcmp((*it).getStudentNumber, ssn))
{
cout << "Sorry, either the number was incorrectly inputted"
<< "\n or the student does not exist." << endl;
}
else
{
cout << "Student found......" << endl;
cout << "Deleting...." << endl;

//DOESNT WORK, i guess i have to delete it from the vector somehow aswell?
delete (*it);
}
}
break;
}
case 0:
{
//exit

//save Student vector to file, outputting everything

ofstream myFile("studentData.txt");
myFile.trunc;

for (vector<Student>::iterator it = vecStudent.begin();
it != vecStudent.end(); it++)
{
myFile >> (*it).getFirstName() >> " " >>
(*it).getLastName() >> " :" >> endl;
//print out grades
myFile >>(*it).printGrades() >> endl;
}
myFile.close;

return 0;
}
default:
{//error msg,
cout << "You have put in an incorrect choice" << endl;
printOut();
}
break;
}

}

return 0;
}

OKay , here is the udpated code, a bit more sorted out, just a few problems generating 21 errors.

First of all I'm not using the right fstream commands or something for output to a text file. Please help. (line 389-402)

Second, when doing a comparison of strings, like "if ( ((*it).getStudentNumber) == ssn)" doesnt work, how do i do this properly?
(line 268 etc)

Lastly, how do i properly delete a student from the vector of students? "delete (*it);" not working. (line 377)

Also, am i declaring the struct properly in the student.h?
Also, what am i forgetting with my printGrade function for student, it doesnt work, here is my list of errors the compiler throws at me.

1>c:\documents and settings\dev\my documents\c++\p4\main\main\main.cpp(147) : error C2784: 'bool std::operator ==(const std::basic_string<_Elem,_Traits,_Alloc> &,const _Elem *)' : could not deduce template argument for 'const std::basic_string<_Elem,_Traits,_Alloc> &' from 'overloaded-function'
1> c:\program files\microsoft visual studio 8\vc\include\string(91) : see declaration of 'std::operator =='
1>c:\documents and settings\dev\my documents\c++\p4\main\main\main.cpp(147) : error C2784: 'bool std::operator ==(const _Elem *,const std::basic_string<_Elem,_Traits,_Alloc> &)' : could not deduce template argument for 'const _Elem *' from 'overloaded-function'
1> c:\program files\microsoft visual studio 8\vc\include\string(81) : see declaration of 'std::operator =='
1>c:\documents and settings\dev\my documents\c++\p4\main\main\main.cpp(147) : error C2784: 'bool std::operator ==(const std::basic_string<_Elem,_Traits,_Alloc> &,const std::basic_string<_Elem,_Traits,_Alloc> &)' : could not deduce template argument for 'const std::basic_string<_Elem,_Traits,_Alloc> &' from 'overloaded-function'
1> c:\program files\microsoft visual studio 8\vc\include\string(71) : see declaration of 'std::operator =='
1>c:\documents and settings\dev\my documents\c++\p4\main\main\main.cpp(147) : error C2784: 'bool std::operator ==(const std::vector<_Ty,_Alloc> &,const std::vector<_Ty,_Alloc> &)' : could not deduce template argument for 'const std::vector<_Ty,_Alloc> &' from 'overloaded-function'
1> c:\program files\microsoft visual studio 8\vc\include\vector(1259) : see declaration of 'std::operator =='
1>c:\documents and settings\dev\my documents\c++\p4\main\main\main.cpp(147) : error C2784: 'bool std::operator ==(const std::istream_iterator<_Ty,_Elem,_Traits,_Diff> &,const std::istream_iterator<_Ty,_Elem,_Traits,_Diff> &)' : could not deduce template argument for 'const std::istream_iterator<_Ty,_Elem,_Traits,_Diff> &' from 'overloaded-function'
1> c:\program files\microsoft visual studio 8\vc\include\iterator(266) : see declaration of 'std::operator =='
1>c:\documents and settings\dev\my documents\c++\p4\main\main\main.cpp(147) : error C2784: 'bool std::operator ==(const std::allocator<_Ty> &,const std::allocator<_Other> &) throw()' : could not deduce template argument for 'const std::allocator<_Ty> &' from 'overloaded-function'
1> c:\program files\microsoft visual studio 8\vc\include\xmemory(174) : see declaration of 'std::operator =='
1>c:\documents and settings\dev\my documents\c++\p4\main\main\main.cpp(147) : error C2784: 'bool std::operator ==(const std::istreambuf_iterator<_Elem,_Traits> &,const std::istreambuf_iterator<_Elem,_Traits> &)' : could not deduce template argument for 'const std::istreambuf_iterator<_Elem,_Traits> &' from 'overloaded-function'
1> c:\program files\microsoft visual studio 8\vc\include\xutility(2143) : see declaration of 'std::operator =='
1>c:\documents and settings\dev\my documents\c++\p4\main\main\main.cpp(147) : error C2784: 'bool std::operator ==(const std::reverse_iterator<_RanIt> &,const std::reverse_iterator<_RanIt2> &)' : could not deduce template argument for 'const std::reverse_iterator<_RanIt> &' from 'overloaded-function'
1> c:\program files\microsoft visual studio 8\vc\include\xutility(1826) : see declaration of 'std::operator =='
1>c:\documents and settings\dev\my documents\c++\p4\main\main\main.cpp(147) : error C2784: 'bool std::operator ==(const std::pair<_Ty1,_Ty2> &,const std::pair<_Ty1,_Ty2> &)' : could not deduce template argument for 'const std::pair<_Ty1,_Ty2> &' from 'overloaded-function'
1> c:\program files\microsoft visual studio 8\vc\include\utility(60) : see declaration of 'std::operator =='
1>c:\documents and settings\dev\my documents\c++\p4\main\main\main.cpp(147) : error C2677: binary '==' : no global operator found which takes type 'std::string' (or there is no acceptable conversion)
1>c:\documents and settings\dev\my documents\c++\p4\main\main\main.cpp(245) : error C2784: 'bool std::operator ==(const std::basic_string<_Elem,_Traits,_Alloc> &,const _Elem *)' : could not deduce template argument for 'const std::basic_string<_Elem,_Traits,_Alloc> &' from 'overloaded-function'
1> c:\program files\microsoft visual studio 8\vc\include\string(91) : see declaration of 'std::operator =='
1>c:\documents and settings\dev\my documents\c++\p4\main\main\main.cpp(245) : error C2784: 'bool std::operator ==(const _Elem *,const std::basic_string<_Elem,_Traits,_Alloc> &)' : could not deduce template argument for 'const _Elem *' from 'overloaded-function'
1> c:\program files\microsoft visual studio 8\vc\include\string(81) : see declaration of 'std::operator =='
1>c:\documents and settings\dev\my documents\c++\p4\main\main\main.cpp(245) : error C2784: 'bool std::operator ==(const std::basic_string<_Elem,_Traits,_Alloc> &,const std::basic_string<_Elem,_Traits,_Alloc> &)' : could not deduce template argument for 'const std::basic_string<_Elem,_Traits,_Alloc> &' from 'overloaded-function'
1> c:\program files\microsoft visual studio 8\vc\include\string(71) : see declaration of 'std::operator =='
1>c:\documents and settings\dev\my documents\c++\p4\main\main\main.cpp(245) : error C2784: 'bool std::operator ==(const std::vector<_Ty,_Alloc> &,const std::vector<_Ty,_Alloc> &)' : could not deduce template argument for 'const std::vector<_Ty,_Alloc> &' from 'overloaded-function'
1> c:\program files\microsoft visual studio 8\vc\include\vector(1259) : see declaration of 'std::operator =='
1>c:\documents and settings\dev\my documents\c++\p4\main\main\main.cpp(245) : error C2784: 'bool std::operator ==(const std::istream_iterator<_Ty,_Elem,_Traits,_Diff> &,const std::istream_iterator<_Ty,_Elem,_Traits,_Diff> &)' : could not deduce template argument for 'const std::istream_iterator<_Ty,_Elem,_Traits,_Diff> &' from 'overloaded-function'
1> c:\program files\microsoft visual studio 8\vc\include\iterator(266) : see declaration of 'std::operator =='
1>c:\documents and settings\dev\my documents\c++\p4\main\main\main.cpp(245) : error C2784: 'bool std::operator ==(const std::allocator<_Ty> &,const std::allocator<_Other> &) throw()' : could not deduce template argument for 'const std::allocator<_Ty> &' from 'overloaded-function'
1> c:\program files\microsoft visual studio 8\vc\include\xmemory(174) : see declaration of 'std::operator =='
1>c:\documents and settings\dev\my documents\c++\p4\main\main\main.cpp(245) : error C2784: 'bool std::operator ==(const std::istreambuf_iterator<_Elem,_Traits> &,const std::istreambuf_iterator<_Elem,_Traits> &)' : could not deduce template argument for 'const std::istreambuf_iterator<_Elem,_Traits> &' from 'overloaded-function'
1> c:\program files\microsoft visual studio 8\vc\include\xutility(2143) : see declaration of 'std::operator =='
1>c:\documents and settings\dev\my documents\c++\p4\main\main\main.cpp(245) : error C2784: 'bool std::operator ==(const std::reverse_iterator<_RanIt> &,const std::reverse_iterator<_RanIt2> &)' : could not deduce template argument for 'const std::reverse_iterator<_RanIt> &' from 'overloaded-function'
1> c:\program files\microsoft visual studio 8\vc\include\xutility(1826) : see declaration of 'std::operator =='
1>c:\documents and settings\dev\my documents\c++\p4\main\main\main.cpp(245) : error C2784: 'bool std::operator ==(const std::pair<_Ty1,_Ty2> &,const std::pair<_Ty1,_Ty2> &)' : could not deduce template argument for 'const std::pair<_Ty1,_Ty2> &' from 'overloaded-function'
1> c:\program files\microsoft visual studio 8\vc\include\utility(60) : see declaration of 'std::operator =='
1>c:\documents and settings\dev\my documents\c++\p4\main\main\main.cpp(245) : error C2677: binary '==' : no global operator found which takes type 'std::string' (or there is no acceptable conversion)
1>c:\documents and settings\dev\my documents\c++\p4\main\main\main.cpp(256) : error C2440: 'delete' : cannot convert from 'Student' to 'void *'
1> No user-defined-conversion operator available that can perform this conversion, or the operator cannot be called
1>Student.cpp
1>Generating Code...
1>c:\documents and settings\dev\my documents\c++\p4\main\main\student.cpp(61) : warning C4715: 'Student::printGrades' : not all control paths return a value



//******************

//STUDENT.h

//**************

#ifndef _Student_HG_

#define _Student_HG_

#include <string>

#include <vector>



using std::string;



class Student 

{

public:

    Student( const string &, const string &, const string & );//i should have an int and assign it to a vector instead of vector here?

    ~Student(); //Destructor

    void setFirstName( const string & );//set first name

    string getFirstName() const;



    void setLastName( const string & );

    string getLastName() const;



    void setStudentNumber( const string & );

    string getStudentNumber() const;



    string printGrades() ;

    

    struct Grade

    {

        string assignmentName;

        int assignmentGrade;

    };

    //void addGrade

    //vector <Grade> vecGrade;

    std::vector<Grade> vecGrade;





private:

    string firstName;

    string lastName;

    string studentNumber;

    





};

#endif









//*************

//Student.cpp

//**************



#include <iostream>

#include <sstream>

#include <string>

using namespace std;

#include "Student.h"



//, const int &grade



Student::Student( const string &first, const string &last, const string &snum )

: firstName( first ), lastName( last ), studentNumber( snum )

{

}



Student::~Student()

{

}



void Student::setFirstName( const string &first)

{

    firstName = first;

}



string Student::getFirstName() const

{

    return firstName;

}



void Student::setLastName( const string &last)

{

    lastName = last;

}



string Student::getLastName() const

{

    return lastName;

}



void Student::setStudentNumber(const string &snum)

{

    studentNumber = snum;

}



string Student::getStudentNumber() const

{

    return studentNumber;

}



string Student::printGrades()

{

    std::stringstream ss;

    string st;

    string s;

    for (vector<Grade>::iterator it = vecGrade.begin();

         it != vecGrade.end(); it++)

    {

        ss << (*it).assignmentGrade;

        ss >> st;

        s = (*it).assignmentName + " " + st + "\n";

        return s;

    }

}





//**************

//Main.cpp

//**********



#include <iostream>

#include <iomanip>

#include <vector>        

#include <string>

#include <sstream>

#include <fstream>

#include "Student.h"



using namespace std;









int enterChoice()

{

    cout << "\nEnter your choice" << endl

        << "1 - Add a student" << endl

        << "2 - Modify a student" << endl

        << "3 - Delete a student" << endl

        << "0 - Exit\n" << endl << endl << endl;

    

        int menuChoice;

        cin >> menuChoice;

        return menuChoice;

}



int enterModChoice()

{

    cout << "\nEnter your choice" << endl

        << "1 - Change student's first name" << endl

        << "2 - Change student's last name" << endl

        << "3 - Change student's student number" << endl

        << "4 - change students assignment/grades" << endl

        << "0 - Exit\n" << endl << endl << endl;

    

        int menuChoice;

        cin >> menuChoice;

        return menuChoice;

}







void printOut(vector<Student> &vecStud)

{

    cout << "Student" << setw(25) << "Grade" <<endl;

    for (vector<Student>::iterator it = vecStud.begin();

         it != vecStud.end(); it++)

    {

        cout << (*it).getFirstName() << " " <<

            (*it).getLastName() << " :" <<

                 endl;

    }



}





int main()

{

    //Load up the student data text file into vector

    vector < Student > vecStudent;

    ifstream myFile("studentData.txt");

    string fname;

    string lname;

    string    ssn;

    int numMarks;

    string assName;

    int assGrade;

    

    Student::Grade tempGrade;



    while (myFile >> fname >> lname >> ssn)

    {

    Student tempStu(fname,lname,ssn);

    

    while (myFile >> assName >> assGrade)

    {

        tempGrade.assignmentName = assName;

        tempGrade.assignmentGrade = assGrade;

        tempStu.vecGrade.push_back(tempGrade);

    }

    vecStudent.push_back(tempStu);

    }



    start:

    printOut(vecStudent);





    int choice;

    int choice2;

    int c;

    string result;

    while ( ( choice = enterChoice() ) != 0)

    {

        

        switch ( choice )

        {

        case 1:

            {//add a student

            

            cout << endl << endl << endl;

            cout << "Adding student...." << endl << endl << endl;

            cout << "What is the student's first name?   : ";

            cin >> fname;

            cout << endl << "What is the student's last name?   : ";

            cin >> lname;

            cout << endl << "What is the student's student number?  : ";

            cin >> ssn;



            Student tempStu(fname,lname,ssn);



            cout << endl << "How many assignments do you want to enter /w marks?" << endl;

            cin >> c;

            for (int x=0; x < c; x++)

            {



                cout << endl << "What's the assignment's title?" << endl;

                cin >> assName;

                tempGrade.assignmentName = assName;

                cout << endl << "What's the assignment's grade?" << endl;

                cin >> assGrade;

                tempGrade.assignmentGrade = assGrade;

                tempStu.vecGrade.push_back(tempGrade);



            }

            



            vecStudent.push_back(tempStu);



            //How many assignments/grades do you want to put in?

            //loop inputting grades into Student grade vector



            printOut(vecStudent);

            break;

            }

        case 2:

            {

            //modify and student

            cout << "Modifing a student......" << endl << endl << endl;

            cout << "What is the student's student number\n who you want to modify?" << endl << endl;

            cin >> ssn;

            

            //search for student

            for (vector<Student>::iterator it = vecStudent.begin();

         it != vecStudent.end(); it++)

            {

                //THIS DOESNT WORK*******

                if ((*it).getStudentNumber == ssn)

                {

                    cout << "Student found......" << endl;

                    

                //display menu for changing a student's stats

                while ( ( choice2 = enterModChoice() ) != 0)

                {

                    switch ( choice2 )

                    {

                    case 1:

                        //set/change students first name

                        cout << "Enter student's new first name: ";

                        cin >> result;

                        (*it).setFirstName( result );

                        break;

                    case 2:

                        //set/change student's last name

                        cout << "Enter student's new last name: ";

                        cin >> result;

                        (*it).setLastName( result );

                        break;

                    case 3:

                        //set/change student's student number

                        cout << "Enter student's new student number: ";

                        cin >> result;

                        (*it).setStudentNumber( result );

                        break;

                    case 4:

                        //print off assignment list (vector of struct Grade's inside Student) w/grades

                        cout << (*it).printGrades();

                        //Bring up another menu for what assignment to change

                        

                        cout << "\nEnter your choice" << endl

                        << "1 - Modify Grade Name/Mark" << endl

                        << "0 - Exit\n" << endl << endl << endl;

                        int cc;

                        cin >> cc;



                        if (cc=0)

                            break;

                        else

                        {

                            cout << "which assignment do you want to change? (1-10);" << endl;

                            cin >> cc;



                            cout << endl <<  "What do you want the new assignment name to be? :";

                            cin >> assName;

                            cout << endl << "what do you want the new assignment grade to be? :";

                            cin >> assGrade;

                            

                            vector<Student::Grade>::iterator itv = (*it).vecGrade.begin();

                            itv += cc;

                            

                            (*itv).assignmentName = assName;

                            (*itv).assignmentGrade = assGrade;

                            cout << (*it).printGrades();

                                break;

                        }







                        //enter assignemnt # 1-10

                        // change 1: name or 2: grade

                        // if 

                        break;

                    case 0:

                        

                        break;

                    default:

                        cout << "You entered a wrong number" << endl;

                        goto start;

                        break;

                    }

                }

                }



                

                else

                {

                    cout << "Sorry, either the number was incorrectly inputted"

                        << "\n or the student does not exist." << endl;

                        goto start;

                }



            }

            break;

            }

        case 3:

            {

            //delete a student

            cout << "Deleting a student......" << endl << endl << endl;

            cout << "What is the student's student number\n who you want to delete?" << endl << endl;

            cin >> ssn;

            

            for (vector<Student>::iterator it = vecStudent.begin();

                 it != vecStudent.end(); it++)

            {

                //THIS DOESNT WORK, how do i compare the strings properly?

                if ( ((*it).getStudentNumber) == ssn)

                {

                    cout << "Sorry, either the number was incorrectly inputted"

                        << "\n or the student does not exist." << endl;

                }

                else

                {

                    cout << "Student found......" << endl;

                    cout << "Deleting...." << endl;

                    

                    //DOESNT WORK, i guess i have to delete it from the vector somehow aswell?

                    delete (*it);

                }

            }

            break;

            }

        case 0:

            {

            //exit





            //save Student vector to file, outputting everything

                

                fstream myFile("studentData.txt",ios::out);

                myFile.trunc;

            

                for (vector<Student>::iterator it = vecStudent.begin();

         it != vecStudent.end(); it++)

                {

                

                    myFile << (*it).getFirstName() << " " <<

            (*it).getLastName() << " " << (*it).getStudentNumber() << endl;

                //print out grades

                myFile << (*it).printGrades() << endl;

                

                }

                myFile.close();



                return 0;

            }

        default:

            {//error msg, 

            cout << "You have put in an incorrect choice" << endl;

            goto start;

            }

            break;

        }



    }





    





    return 0;

}

//***********
//student.h

#ifndef _Student_HG_
#define _Student_HG_
#include<string>
#include<vector>
using std::string;
class Student
{
public:
Student( const string &, const string &, const string & );//i should have an int and assign it to a vector instead of vector here?
~Student(); //Destructor
void setFirstName( const string & );//set first name
string getFirstName() const;
void setLastName( const string & );
string getLastName() const;
void setStudentNumber( const string & );
string getStudentNumber() const;
string printGrades() ;

struct Grade
{
string assignmentName;
int assignmentGrade;
};
//void addGrade
//vector <Grade> vecGrade;
std::vector<Grade> vecGrade;

private:
string firstName;
string lastName;
string studentNumber;

};
#endif

//*************
//Student.cpp
//*************
#include<iostream>
#include<sstream>
#include<string>
usingnamespace std;
#include"Student.h"
//, const int &grade
Student::Student( const string &first, const string &last, const string &snum )
: firstName( first ), lastName( last ), studentNumber( snum )
{
}
Student::~Student()
{
}
void Student::setFirstName( const string &first)
{
firstName = first;
}
string Student::getFirstName() const
{
return firstName;
}
void Student::setLastName( const string &last)
{
lastName = last;
}
string Student::getLastName() const
{
return lastName;
}
void Student::setStudentNumber(const string &snum)
{
studentNumber = snum;
}
string Student::getStudentNumber() const
{
return studentNumber;
}
string Student::printGrades()
{
std::stringstream ss;
string st;
string s;
for (vector<Grade>::iterator it = vecGrade.begin();
it != vecGrade.end(); it++)
{
ss << (*it).assignmentGrade;
ss >> st;
s = (*it).assignmentName + " " + st + "\n";
return s;
}

//*************************
//main.cpp
//**************************
#include<iostream>
#include<iomanip>
#include<vector>
#include<string>
#include<sstream>
#include<fstream>
#include"Student.h"
usingnamespace std;

int enterChoice()
{
cout << "\nEnter your choice" << endl
<< "1 - Add a student" << endl
<< "2 - Modify a student" << endl
<< "3 - Delete a student" << endl
<< "0 - Exit\n" << endl << endl << endl;

int menuChoice;
cin >> menuChoice;
return menuChoice;
}
int enterModChoice()
{
cout << "\nEnter your choice" << endl
<< "1 - Change student's first name" << endl
<< "2 - Change student's last name" << endl
<< "3 - Change student's student number" << endl
<< "4 - change students assignment/grades" << endl
<< "0 - Exit\n" << endl << endl << endl;

int menuChoice;
cin >> menuChoice;
return menuChoice;
}

void printOut(vector<Student> &vecStud)
{
cout << "Student" << setw(25) << "Grade" <<endl;
for (vector<Student>::iterator it = vecStud.begin();
it != vecStud.end(); it++)
{
cout << (*it).getFirstName() << " " <<
(*it).getLastName() << " :" <<
endl;
}
}

int main()
{
//Load up the student data text file into vector
vector < Student > vecStudent;
ifstream myFile("studentData.txt");
string fname;
string lname;
string ssn;
int numMarks;
string assName;
int assGrade;

Student::Grade tempGrade;
while (myFile >> fname >> lname >> ssn)
{
Student tempStu(fname,lname,ssn);

while (myFile >> assName >> assGrade)
{
tempGrade.assignmentName = assName;
tempGrade.assignmentGrade = assGrade;
tempStu.vecGrade.push_back(tempGrade);
}
vecStudent.push_back(tempStu);
}
start:
printOut(vecStudent);

int choice;
int choice2;
int c;
string result;
while ( ( choice = enterChoice() ) != 0)
{

switch ( choice )
{
case 1:
{//add a student

cout << endl << endl << endl;
cout << "Adding student...." << endl << endl << endl;
cout << "What is the student's first name? : ";
cin >> fname;
cout << endl << "What is the student's last name? : ";
cin >> lname;
cout << endl << "What is the student's student number? : ";
cin >> ssn;
Student tempStu(fname,lname,ssn);
cout << endl << "How many assignments do you want to enter /w marks?" << endl;
cin >> c;
for (int x=0; x < c; x++)
{
cout << endl << "What's the assignment's title?" << endl;
cin >> assName;
tempGrade.assignmentName = assName;
cout << endl << "What's the assignment's grade?" << endl;
cin >> assGrade;
tempGrade.assignmentGrade = assGrade;
tempStu.vecGrade.push_back(tempGrade);
}

vecStudent.push_back(tempStu);
//How many assignments/grades do you want to put in?
//loop inputting grades into Student grade vector
printOut(vecStudent);
break;
}
case 2:
{
//modify and student
cout << "Modifing a student......" << endl << endl << endl;
cout << "What is the student's student number\n who you want to modify?" << endl << endl;
cin >> ssn;

//search for student
for (vector<Student>::iterator it = vecStudent.begin();
it != vecStudent.end(); it++)
{
//THIS DOESNT WORK*******
if ((*it).getStudentNumber() == ssn)
{
cout << "Student found......" << endl;

//display menu for changing a student's stats
while ( ( choice2 = enterModChoice() ) != 0)
{
switch ( choice2 )
{
case 1:
//set/change students first name
cout << "Enter student's new first name: ";
cin >> result;
(*it).setFirstName( result );
break;
case 2:
//set/change student's last name
cout << "Enter student's new last name: ";
cin >> result;
(*it).setLastName( result );
break;
case 3:
//set/change student's student number
cout << "Enter student's new student number: ";
cin >> result;
(*it).setStudentNumber( result );
break;
case 4:
//print off assignment list (vector of struct Grade's inside Student) w/grades
cout << (*it).printGrades();
//Bring up another menu for what assignment to change

cout << "\nEnter your choice" << endl
<< "1 - Modify Grade Name/Mark" << endl
<< "0 - Exit\n" << endl << endl << endl;
int cc;
cin >> cc;
if (cc=0)
break;
else
{
cout << "which assignment do you want to change? (1-10);" << endl;
cin >> cc;
cout << endl << "What do you want the new assignment name to be? :";
cin >> assName;
cout << endl << "what do you want the new assignment grade to be? :";
cin >> assGrade;

vector<Student::Grade>::iterator itv = (*it).vecGrade.begin();
itv += cc;

(*itv).assignmentName = assName;
(*itv).assignmentGrade = assGrade;
cout << (*it).printGrades();
break;
}

//enter assignemnt # 1-10
// change 1: name or 2: grade
// if
break;
case 0:

break;
default:
cout << "You entered a wrong number" << endl;
goto start;
break;
}
}
}

else
{
cout << "Sorry, either the number was incorrectly inputted"
<< "\n or the student does not exist." << endl;
goto start;
}
}
break;
}
case 3:
{
//delete a student
cout << "Deleting a student......" << endl << endl << endl;
cout << "What is the student's student number\n who you want to delete?" << endl << endl;
cin >> ssn;

for (vector<Student>::iterator it = vecStudent.begin();
it != vecStudent.end(); it++)
{
//THIS DOESNT WORK, how do i compare the strings properly?
if ( (*it).getStudentNumber() == ssn)
{
cout << "Sorry, either the number was incorrectly inputted"
<< "\n or the student does not exist." << endl;
}
else
{
cout << "Student found......" << endl;
cout << "Deleting...." << endl;

//DOESNT WORK, i guess i have to delete it from the vector somehow aswell?
vecStudent.erase(it, it+1);
//delete (*it);
}
}
break;
}
case 0:
{
//exit

//save Student vector to file, outputting everything

fstream myFile("studentData.txt",ios::out);
myFile.trunc;

for (vector<Student>::iterator it = vecStudent.begin();
it != vecStudent.end(); it++)
{

myFile << (*it).getFirstName() << " " <<
(*it).getLastName() << " " << (*it).getStudentNumber() << endl;
//print out grades
myFile << (*it).printGrades() << endl;

}
myFile.close();
return 0;
}
default:
{//error msg,
cout << "You have put in an incorrect choice" << endl;
goto start;
}
break;
}
}

return 0;
}

}

if ( (*it).getStudentNumber() == ssn)
{
cout << "Sorry, either the number was incorrectly inputted"
<< "\n or the student does not exist." << endl;
}
else
{
cout << "Student found......" << endl;
cout << "Deleting...." << endl;
}