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";}
