STUDENT MANAGEMENT SYSTEM PROJECT IN C++ WITH DATA FILE HANDLING FOR STUDENTS OF CLASS XII CBSE COMPUTER SCIENCE

BASIC WORKING PROJECT ON STUDENT MANAGEMENT SYSTEM WITH FILE HANDLING IN C++ FOR THE STUDENTS OF CLASS XII - CBSE AND ENGINEERING STUDENTS FOR BASIC FILE HANDLING CONCEPT IN C++ ALONG WITH OUTPUTS AND DOWNLOADABLE WORKING CODE AND APPLICATION.

#include<iostream>
#include<fstream>
#include<iomanip>
#include<stdlib.h>

using namespace std;

class Student
{
int admno;
char name[20];
char gender;
int std;
float marks;
float percentage;

public:
void getData();
void showData();
int getAdmno(){return admno;}
}s;

void Student::getData()
{
cout<<"\n\nEnter Student Details......\n";
cout<<"Enter Admission No. : "; cin>>admno;
cout<<"Enter Full Name : "; cin.ignore(); cin.getline(name,20);
cout<<"Enter Gender (M/F) : "; cin>>gender;
cout<<"Enter Standard : "; cin>>std;
cout<<"Enter Marks (out of 500): "; cin>>marks;
cout<<endl;
percentage=marks*100.0/500.00;
}

void Student::showData()
{
cout<<"\n\n.......Student Details......\n";
cout<<"Admission No. : "<<admno<<endl;
cout<<"Full Name : "<<name<<endl;
cout<<"Gender : "<<gender<<endl;
cout<<"Standard : "<<std<<endl;
cout<<"Marks (out of 500): "<<marks<<endl;
cout<<"Percentage : "<<percentage<<endl;
cout<<endl;
}

void addData()
{
ofstream fout;
fout.open("Students.dat",ios::binary|ios::out|ios::app);
s.getData();
fout.write((char*)&s,sizeof(s));
fout.close();
cout<<"\n\nData Successfully Saved to File....\n";
}

void displayData()
{
ifstream fin;
fin.open("Students.dat",ios::in|ios::binary);
while(fin.read((char*)&s,sizeof(s)))
{
s.showData();
}
fin.close();
cout<<"\n\nData Reading from File Successfully Done....\n";
}

void searchData()
{
int n, flag=0;
ifstream fin;
fin.open("Students.dat",ios::in|ios::binary);
cout<<"Enter Admission Number you want to search : ";
cin>>n;

while(fin.read((char*)&s,sizeof(s)))
{
if(n==s.getAdmno())
{
cout<<"The Details of Admission No. "<<n<<" shown herewith:\n";
s.showData();
flag++;
}
}
fin.close();
if(flag==0)
cout<<"The Admission No. "<<n<<" not found....\n\n";
cout<<"\n\nData Reading from File Successfully Done....\n";
}

void deleteData()
{
int n, flag=0;
ifstream fin;
ofstream fout,tout;

fin.open("Students.dat",ios::in|ios::binary);
fout.open("TempStud.dat",ios::out|ios::app|ios::binary);
tout.open("TrashStud.dat",ios::out|ios::app|ios::binary);

cout<<"Enter Admission Number you want to move to Trash : ";
cin>>n;

while(fin.read((char*)&s,sizeof(s)))
{
if(n==s.getAdmno())
{
cout<<"The Following Admission No. "<<n<<" has been moved to Trash:\n";
s.showData();
tout.write((char*)&s,sizeof(s));
flag++;
}
else
{
fout.write((char*)&s,sizeof(s));
}
}
fout.close();
tout.close();
fin.close();
if(flag==0)
cout<<"The Admission No. "<<n<<" not found....\n\n";
remove("Students.dat");
rename("tempStud.dat","Students.dat");
}

void getTrash()
{
ifstream fin;
fin.open("TrashStud.dat",ios::in|ios::binary);
while(fin.read((char*)&s,sizeof(s)))
{
s.showData();
}
fin.close();
cout<<"\n\nData Reading from Trash File Successfully Done....\n";
}

void modifyData()
{
int n, flag=0, pos;
fstream fio;

fio.open("Students.dat",ios::in|ios::out|ios::binary);

cout<<"Enter Admission Number you want to Modify : ";
cin>>n;

while(fio.read((char*)&s,sizeof(s)))
{
pos=fio.tellg();
if(n==s.getAdmno())
{
cout<<"The Following Admission No. "<<n<<" will be modified with new data:\n";
s.showData();
cout<<"\n\nNow Enter the New Details....\n";
s.getData();
fio.seekg(pos-sizeof(s));
fio.write((char*)&s,sizeof(s));
flag++;
}
}
fio.close();

if(flag==0)
cout<<"The Admission No. "<<n<<" not found....\n\n";
}

void project()
{
int ch;
do
{
system("cls");
cout<<"...............STUDENT MANAGEMENT SYSTEM..............\n";
cout<<"======================================================\n";
cout<<"0. Exit from Program\n";
cout<<"1. Write Data to File\n";
cout<<"2. Read Data From File\n";
cout<<"3. Search Data From File\n";
cout<<"4. Delete Data From File\n";
cout<<"5. Get Deleted Records from Trash file\n";
cout<<"6. Modify Data in File\n";
cout<<"Enter your choice : ";
cin>>ch;
system("cls");
switch(ch)
{
case 1: addData(); break;
case 2: displayData(); break;
case 3: searchData(); break;
case 4: deleteData(); break;
case 5: getTrash(); break;
case 6: modifyData(); break;
}
system("pause");
}while(ch);
}

int main()
{
project();
}