Cpp project : varsity data base

Cpp project : varsity data base

 

#include<iostream>

#include<cstring>

#include<conio.h>

using namespace std;

int j=0,m=0,n=0,k,b,temp;

char p[10];

class user

{

    public:

    char userid[20];

    int usertype; // 1 admin, 2 faculty, 3 student

    char password[10];

    public:

    user(){strcpy(userid,"admin");usertype=1; strcpy(password,"admin");}

    void adminview();

    void facultyview();

    void studentview();

    void newaccount();

};

int totalstd;

class student

{

    public:

    char stdname[20];

    char stdid[20];

    string course[6];

    float gpa;

    static int stdnumber;

public:

    student();

    char grade[2];

    int credithr,sec;

    //void create_student_id();

    void edit_student_id();

    void view_student_id();

    void delete_student_id();

    void block_or_unblock_student_id();

    void add_course();

    void drop_course();

    void give_gpa();

    void gpa_calculation();

};

int student::stdnumber=1;

user u[100];

student s[100];

student::student()

{

    gpa=0;

}

int main()

{

    while(1)

    {

        char cusrname[20];

    char cpassword[20],c;

    cout<<"This is Login Panel"<<"\n\n"<<endl;

    cout<<"Enter Your User Name"<<endl;

    cin>>cusrname;

    cout<<"Enter Your Password"<<endl;

      for(int ps=0;;)

    {

        c=getch();

        if((c>='a' && c<='z') || (c>='A' && c<='Z') || (c>='0' && c<='9'))

        {cpassword[ps]=c;ps++;

            cout<<"*";

        }

        if(c=='\b' && ps>=1)

        {cout<<"\b \b";--ps;

        }

        if(c=='\r')

        {cpassword[ps]='\0';break;

        }

    }

    for(int i=0; i<100; i++)

    {

        if(strcmp(cusrname,u[i].userid)==0 && strcmp(cpassword,u[i].password)==0)

        {

            cout<<"\nSuccessfull Login"<<"\n\n"<<endl;

            if(u[i].usertype==1)

            {

                j=i;

                u[j].adminview();

                j=0;

                break;

            }

            if(u[i].usertype==2)

            {

                j=i;

                u[j].facultyview();

                j=0;

                break;

            }

            if(u[i].usertype==3 )

            {

                if(strcmp(u[temp].password,cpassword)!=0 && temp==i)

                {

                    cout<<"This ID has been blocked\n";

                    break;

                }

                else

                {

                  j=i;

                  u[j].studentview();

                  j=0;

                  break;

                }

            }

        }

    }

    }

    return 0;

}

void user::adminview()

{

    cout<<"This is ADMIN Panel"<<"\n"<<endl;

    int input;

screen:

    cout << "Press 1 To create New account\n";

    //cout << "Press 2 To Create New Student ID\n";

    cout << "Press 2 To Edit Student Details\n";

    cout << "Press 3 To View Student Details\n";

    cout << "Press 4 To Delete Student Id\n";

    cout << "Press 5 To Block or unblock Student Id\n";

    cout << "Press 6 To Add course\n";

    cout << "Press 7 To Drop Course\n";

    cout << "Press 8 To Give GPA\n";

    cout << "Press 9 To calculate gpa\n";

    cout<<"Press 10 to log out\n";

    cin >> input;

    switch(input)

        {

        case 1:

            u[m].newaccount();

            goto screen;

        /*case 2:

            s[m].create_student_id();

            goto screen;*/

        case 2:

            s[j].edit_student_id();

            goto screen;

        case 3:

            s[j].view_student_id();

            goto screen;

        case 4:

            s[j].delete_student_id();

            goto screen;

        case 5:

            s[j].block_or_unblock_student_id();

            goto screen;

        case 6:

            s[j].add_course();

            goto screen;

        case 7:

            s[j].drop_course();

            goto screen;

        case 8:

            s[j].give_gpa();

            goto screen;

        case 9:

            s[j].gpa_calculation();

            goto screen;

        case 10:

            break;

        }

    if(input>11)

    {

        cout << "Wrong input\n";

        goto screen;

    }

}

void user::facultyview()

{

    cout<<"This is Faculty Panel"<<"\n"<<endl;

    int input;

screen:

    cout << "Press 1 To View Student Details\n";

    cout << "Press 2 To Add course\n";

    cout << "Press 3 To Drop Course\n";

    cout << "Press 4 To Give GPA\n";

    cout << "Press 5 To calculate gpa\n";

    cout<<"Press 6 to log out\n";

    cin >> input;

    switch(input)

        {

        case 1:

            s[j].view_student_id();

            goto screen;

        case 2:

            s[j].add_course();

            goto screen;

        case 3:

            s[j].drop_course();

            goto screen;

        case 4:

            s[j].give_gpa();

            goto screen;

        case 5:

            s[j].gpa_calculation();

            goto screen;

        case 6:

            break;

        }

    if(input>6)

    {

        cout << "Wrong input\n";

        goto screen;

    }

}

void user::studentview()

{

    cout<<"This is Student Panel"<<"\n"<<endl;

    int input;

screen:

    cout << "Press 1 To View Student Details\n";

    cout << "Press 2 To Logout\n";

    cin >> input;

    switch(input)

        {

        case 1:

            s[j].view_student_id();

            goto screen;

        case 2:

            break;

        }

    if(input>2)

    {

        cout << "Wrong input\n";

        goto screen;

    }

}

void user::newaccount()

{

    cout<<"Create New Account"<<"\n"<<endl;

    cout<<"Enter User Name\n";

    cin>>u[m].userid;

    cout<<"Create New Password\n";

    cin>>u[m].password;

    cout<<"Enter user type\n";

    cout<<"1 for admin type\n 2 for faculty type \n 3 for student type\n";

    cin>>u[m].usertype;

    if(u[m].usertype==3)

    {

        cout<<"Create New Student id"<<"\n"<<endl;

    cout<<"Enter Student Name\n";

    cin>>s[n].stdname;

    cout<<"Enter student id(number)\n";

    cin>>s[n].stdid;

    cout<<"Successfully created new student id\n";

    totalstd=student::stdnumber++;

    n++;

    }

    cout<<"You have successfully Created Account with following details\n";

    cout<<"User id      :"<<u[m].userid;

    cout<<"User type    :"<<u[m].usertype;

    m++;

}

/*void student::create_student_id()

{

    cout<<"Create New Student id"<<"\n"<<endl;

    cout<<"Enter Student Name\n";

    cin>>s[n].stdname;

    cout<<"Enter student id\n";

    cin>>s[n].stdid;

    cout<<"Successfully created new student id\n";

    totalstd=stdnumber++;

    n++;

}*/

void student::edit_student_id()

{   char id[20]; int k,b;

    cout<<"Edit student ID\n";

    cout<<"Enter the current student ID.\n";

    cin>>id;

    for(int a=0;a<100;a++)

    {

      if(strcmp(id,s[a].stdid)==0)

      { j=a;

        cout<<"Edit Student name:\n";

        cin>>s[j].stdname;

        cout<<"Edit student courses:\n";

        cout<<"number of courses\n";

        cin>>k;

        for(b=0;b<k;b++)

        { cout<<"course code\n";

        cin>>s[j].course[b];

        cout<<"credit hour\n";

        cin>>s[j].credithr;

        cout<<"edit sec\n";

        cin>>s[j].sec;

        cout<<"Edit CPA\n";

        cin>>s[j].gpa;

        cout<<"Edit grade \n";

        cin>>s[j].grade;

        }

        cout<<"Successfully edited student ID\n";

      }

    }

}

void student::view_student_id()

{

    char id[20]; int b;

    cout<<"Enter the student ID to view\n";

    cin>>id;

    for(int a=0;a<100;a++)

    {

        if(strcmp(id,s[a].stdid)==0)

        {j=a;

          cout<<"\t\t\t\tStudent information\n\n";

          cout<<"NAME:\t\t"<<s[j].stdname<<endl;

          cout<<"ID  :\t\t"<<s[j].stdid<<endl;

          cout<<"COURSES,CREDIT HOUR,SEC,CGPA,GRADE:\t\t\n";

          for(b=0;b<6;b++)

          {

              cout<<s[j].course[b]<<"   "<<s[j].credithr<<"   "<<s[j].sec<<"   "<<s[j].gpa<<"   "<<s[j].grade<<endl;

          }

        }

    }

}

void student::delete_student_id()

{

   char id[20]; int b;

   cout<<"Enter the student ID\n";

   cin>>id;

   for(int a=0;a<100;a++)

   {

       if(strcmp(id,s[a].stdid)==0)

       {

           j=a;

           strcpy(s[j].stdid,'\0');

           strcpy(s[j].stdname,'\0');

           s[j].gpa='\0';

           s[j].sec='\0';

           s[j].credithr='\0';

           strcpy(s[j].grade,'\0');

           cout<<"All information has been deleted\n";

           for(b=0;b<6;b++)

           {

              s[j].course[b]='\0';

           }

       }

   }

}

void student::block_or_unblock_student_id()

{

   char id[20],p[10]; int n;

   cout<<"Press 1 :if you want to block a student's id\n";

   cout<<"Press 2 :if you want to unblock a student's id\n";

   cin>>n;

   if(n==1)

   {

       cout<<"enter the student's id\n";

       cin>>id;

        for(int a=0;a<100;a++)

      {

       if(strcmp(id,s[a].stdid)==0)

       {

           temp=a;

           strcpy(p,u[a].password);

           strcpy(u[temp].password,"bk");

           cout<<"This ID has been blocked.\n";

       }

      }

   }

   if(n==2)

   {

      cout<<"enter the student's id\n";

       cin>>id;

        for(int a=0;a<100;a++)

      {

       if(strcmp(id,s[a].stdid)==0)

       {

           temp=a;

           //strcpy(p,u[a].password);

           strcpy(u[temp].password,p);

           cout<<"This ID has been unblocked.\n";

       }

      }

   }

}

void student::add_course()

{

  char id[20];

  cout<<"Enter the student ID:\n";

  cin>>id;

  for(int a=0;a<100;a++)

  {

      if(strcmp(id,s[a].stdid)==0)

      {

          j=a;

          cout<<"Enter the number of courses:\n";

          cin>>k;

          for(int b=0;b<k;b++)

          {   cout<<"course code\n";

              cin>>s[j].course[b];

              cout<<"credit hour\n";

              cin>>s[j].credithr;

              cout<<"sec\n";

              cin>>s[j].sec;

          }

          cout<<"You have added "<<" "<<k<<"  courses"<<endl;

      }

  }

}

void student::drop_course()

{

   char id[20];

   cout<<"Enter the student ID:\n";

   cin>>id;

   for(int a=0;a<100;a++)

   {

       if(strcmp(id,s[a].stdid)==0)

       { j=a;

       }

   }

}

void student::give_gpa()

{   char id[20];

    cout<<"Enter the student ID\n";

    cin>>id;

    cout<<"For how many subjects you want to give GPA?\nPlease enter the number of subjects.\n";

    cin>>k;

    for(int a=0;a<100;a++)

    {

       if(strcmp(id,s[a].stdid)==0)

       {j=a;

           for(int b=0;b<k;b++)

           { cout<<"course code\n";

             cin>>s[j].course[b];

             cout<<"cgpa\n";

             cin>>s[j].gpa;

             cout<<"grade\n";

             cin>>s[j].grade;

           }

           cout<<"successfully given gpa\n";

       }

    }

}

void student::gpa_calculation()

{

   char id[20];

   float C=0,c=0,t=0;

   cout<<"Enter the student ID\n";

   cin>>id;

   cout<<"For how many subjects you want to give credit hour?\nPlease enter the number of subjects.\n";

    cin>>k;

   for(int a=0;a<100;a++)

   {

       if(strcmp(id,s[a].stdid)==0)

       {

           j=a;

           for(int b=0;b<k;b++)

           {   cin>>s[j].gpa;

               cin>>s[j].credithr;

               c=c+s[j].credithr;

               C=C+(s[j].credithr*s[j].gpa);

           }

       }

   }

   t=C/c;

   s[j].gpa=t;

   cout<<"successfully calculated CGPA\n";

}