Friday, February 20, 2015

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";
}

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