Turbo C++ - Student Database Handling using Flat File System
I have come up with a simple menu driven version that can be used to add, edit, view and delete the student information system using flat file (binary file) system.
Refer to the following links for the same program in different languages:
1. Program in Turbo C++ for Menu Driven Student DB handling using Flat File
2. Program in Visual C++ for Menu Driven Student DB handling using Flat File
3. Program in C# for Menu Driven Student DB handling using Flat File
Source Code
// StudentFileHandling.cpp : Defines the entry point for the console application.
//
#include <conio.h>
#include <process.h>
#include <dos.h>
#include <iostream>
#include <windows.h>
#include <stdio.h>
#include <string.h>
#include <tchar.h>
#pragma pack(2)
struct CStudent
{
public:
char name[64];
long age;
char dept[64];
};
struct CStudents
{
static const int MaxSz = 100;
char m_fileName[1024];
int m_nMaxStudents;
CStudent m_studList[MaxSz];
CStudents(const char *filename)
{
m_nMaxStudents = 0;
strcpy(m_fileName, filename);
}
void AddRecord(const char *name, int age, const char *dept)
{
int pos = m_nMaxStudents;
strcpy(m_studList[pos].name,name);
strcpy(m_studList[pos].dept,dept);
m_studList[pos].age = age;
m_nMaxStudents++;
WriteRecords();
}
void EditRecord(int pos, const char *name, int age, const char *dept)
{
strcpy(m_studList[pos].name,name);
strcpy(m_studList[pos].dept,dept);
m_studList[pos].age = age;
WriteRecords();
}
void DeleteRecord(int pos)
{
m_nMaxStudents--;
for(int i = pos; i < m_nMaxStudents; i++)
{
m_studList[i] = m_studList[i + 1];
}
WriteRecords();
}
int ReadRecords()
{
FILE *istream = fopen(m_fileName, "rb");
if (istream == 0)
return false;
char buf[4096];
int nTotalRecordsRead = 0;
for(int i = 0; i < MaxSz; i++)
{
if(feof(istream))
break;
int nBytesRead = fread(buf, 1, sizeof(CStudent), istream);
if(nBytesRead < sizeof(CStudent))
break;
char *p = reinterpret_cast<char*>(&m_studList[i]);
memcpy(p, buf, sizeof(CStudent));
nTotalRecordsRead++;
}
fclose(istream);
m_nMaxStudents = nTotalRecordsRead;
return nTotalRecordsRead;
}
int WriteRecords()
{
FILE *ostream = fopen(m_fileName, "wb");
if (ostream == 0)
return false;
int nTotalRecordsWritten = 0;
char buf[4096];
for(int i = 0; i < m_nMaxStudents; i++)
{
fwrite((char*)&m_studList[i], 1, sizeof(CStudent), ostream);
nTotalRecordsWritten++;
}
fclose(ostream);
return nTotalRecordsWritten;
}
};
CStudents theStudents("c:\\students.bin");
void gotoxy(int x, int y)
{
COORD ord;
ord.X = x;
ord.Y = y;
SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE), ord);
}
int DisplayMainMenu()
{
::system("cls");
gotoxy(10,4);
std::cout << "Welcome to Student Database Application";
gotoxy(10,5);
std::cout << "___________________________________________";
gotoxy(10,6);
std::cout << "1. Add Student Record";
gotoxy(10,7);
std::cout << "2. Edit Student Record";
gotoxy(10,8);
std::cout << "3. View Student Record";
gotoxy(10,9);
std::cout << "4. Delete Student Record";
gotoxy(10,10);
std::cout << "5. Exit";
gotoxy(10,11);
std::cout << "___________________________________________";
gotoxy(10,13);
std::cout << "Enter your Selection: ";
int m = -1;
std::cin >> m;
return m;
}
void ViewRecords()
{
theStudents.ReadRecords();
::system("cls");
gotoxy(10,4);
std::cout << "Welcome to Student Database Application";
gotoxy(10,5);
std::cout << "___________________________________________";
gotoxy(10,6);
std::cout << "SNo Student Name Age Department ";
gotoxy(10,7);
std::cout << "___________________________________________";
int pos = 8;
// Enable Paging
for(int i = 0; i < theStudents.m_nMaxStudents; i++)
{
gotoxy(10,pos);
std::cout << i + 1;
gotoxy(14,pos);
std::cout << theStudents.m_studList[i].name;
gotoxy(33,pos);
std::cout << theStudents.m_studList[i].age;
gotoxy(42,pos);
std::cout << theStudents.m_studList[i].dept;
pos++;
}
gotoxy(10,pos++);
std::cout << "___________________________________________";
pos++;
gotoxy(10,pos++);
}
void InputRecords()
{
while(1)
{
::system("cls");
gotoxy(10,4);
std::cout << "Welcome to Student Database Application";
gotoxy(10,5);
std::cout << "___________________________________________";
gotoxy(10,6);
std::cout << "Student Name: ";
gotoxy(10,7);
std::cout << "Age: ";
gotoxy(10,8);
std::cout << "Departement: ";
gotoxy(10,9);
std::cout << "___________________________________________";
gotoxy(23,6);
char name[64];
std::cin >> name;
gotoxy(17,7);
int age;
std::cin >> age;
gotoxy(23,8);
char dept[64];
std::cin >> dept;
theStudents.AddRecord(name, age, dept);
gotoxy(10,11);
std::cout << "Do you want to add another record (Y/N)? ";
char ch = getch();
if(ch == 'Y' || ch == 'y')
continue;
else
break;
}
}
void EditRecords()
{
ViewRecords();
std::cout << "Enter the serial number you want to edit: ";
int m;
std::cin >> m;
if(m >= 1 && m <= theStudents.m_nMaxStudents)
{
::system("cls");
gotoxy(10,4);
std::cout << "Welcome to Student Database Application";
gotoxy(10,5);
std::cout << "___________________________________________";
gotoxy(10,6);
std::cout << "Student Name: ";
gotoxy(10,7);
std::cout << "Age: ";
gotoxy(10,8);
std::cout << "Departement: ";
gotoxy(10,9);
std::cout << "___________________________________________";
gotoxy(23,6);
char name[64];
std::cin >> name;
gotoxy(17,7);
int age;
std::cin >> age;
gotoxy(23,8);
char dept[64];
std::cin >> dept;
theStudents.EditRecord(m - 1, name, age, dept);
gotoxy(10,12);
std::cout << "Record updated. Press any key to return to Main Menu";
char ch = getch();
}
else
{
gotoxy(10,12);
std::cout << "Invalid Entry. Press any key to return to Main Menu";
char ch = getch();
}
}
void DeleteRecords()
{
ViewRecords();
std::cout << "Enter the serial number you want to delete: ";
int m;
std::cin >> m;
if(m >= 1 && m <= theStudents.m_nMaxStudents)
{
theStudents.DeleteRecord(m - 1);
std::cout << " Record deleted. Press any key to return to Main Menu";
char ch = getch();
}
else
{
std::cout << " Invalid Entry. Press any key to return to Main Menu";
char ch = getch();
}
}
int _tmain(int argc, _TCHAR* argv[])
{
theStudents.ReadRecords();
while(1)
{
int selection = DisplayMainMenu();
switch(selection)
{
case 1:
InputRecords();
break;
case 2:
EditRecords();
break;
case 3:
{
ViewRecords();
std::cout << "Press any key to return to Main Manu: ";
char ch = getch();
}
break;
case 4:
DeleteRecords();
break;
case 5:
default:
return 0;
};
}
return 0;
}
Click here to download the Visual C++ source code and executable file.
Output
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