Sunday, 21 February 2016

Student Report Card Project in C++

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Questions:

Student Report Card Project

Explanation:

Below mention code is compiled in Visual Studio 2015 and output snap is attached.. If any problem you feel and want explanation feel free to contact.

Code:

/**************************************************|
/*************C++ Programs And Projects************|
***************************************************/
//***************************************************************
//                   HEADER FILE USED IN PROJECT  http://cppexamples.blogspot.com/
//****************************************************************

#include<iostream>
#include<fstream>
#include<iomanip>
using namespace std;


//***************************************************************
//                   CLASS USED IN PROJECT http://cppexamples.blogspot.com/
//****************************************************************

class student
{
       int rollno;
       char name[50];
       int p_marks, c_marks, m_marks, e_marks, cs_marks;
       double per;
       char grade;
       void calculate();    //function to calculate grade
public:
       void getdata();      //function to accept data from user
       void showdata() const;     //function to show data on screen
       void show_tabular() const;
       int retrollno() const;
}; //class ends here


void student::calculate()
{
       per = (p_marks + c_marks + m_marks + e_marks + cs_marks) / 5.0;
       if (per >= 60)
              grade = 'A';
       else if (per >= 50)
              grade = 'B';
       else if (per >= 33)
              grade = 'C';
       else
              grade = 'F';
}

void student::getdata()
{
       cout << "\nEnter The roll number of student ";
       cin >> rollno;
       cout << "\n\nEnter The Name of student ";
       cin.ignore();
       cin.getline(name, 50);
       cout << "\nEnter The marks in physics out of 100 : ";
       cin >> p_marks;
       cout << "\nEnter The marks in chemistry out of 100 : ";
       cin >> c_marks;
       cout << "\nEnter The marks in maths out of 100 : ";
       cin >> m_marks;
       cout << "\nEnter The marks in english out of 100 : ";
       cin >> e_marks;
       cout << "\nEnter The marks in computer science out of 100 : ";
       cin >> cs_marks;
       calculate();
}

void student::showdata() const
{
       cout << "\nRoll number of student : " << rollno;
       cout << "\nName of student : " << name;
       cout << "\nMarks in Physics : " << p_marks;
       cout << "\nMarks in Chemistry : " << c_marks;
       cout << "\nMarks in Maths : " << m_marks;
       cout << "\nMarks in English : " << e_marks;
       cout << "\nMarks in Computer Science :" << cs_marks;
       cout << "\nPercentage of student is  :" << per;
       cout << "\nGrade of student is :" << grade;
}

void student::show_tabular() const
{
       cout << rollno << setw(6) << " " << name << setw(10) << p_marks << setw(4) << c_marks << setw(4) << m_marks << setw(4) << e_marks << setw(4) << cs_marks << setw(8) << per << setw(6) << grade << endl;
}

int  student::retrollno() const
{
       return rollno;
}


//***************************************************************
//    function declaration   http://cppexamples.blogspot.com/
//****************************************************************

void write_student();      //write the record in binary file
void display_all();        //read all records from binary file
void display_sp(int);      //accept rollno and read record from binary file
void modify_student(int);  //accept rollno and update record of binary file
void delete_student(int);  //accept rollno and delete selected records from binary file
void class_result(); //display all records in tabular format from binary file
void result();       //display result menu
void intro(); //display welcome screen
void entry_menu();   //display entry menu on screen


                                  //***************************************************************
                                  //    THE MAIN FUNCTION OF PROGRAM  http://cppexamples.blogspot.com/
                                  //****************************************************************


int main()
{
       char ch;
       cout.setf(ios::fixed | ios::showpoint);
       cout << setprecision(2); // program outputs decimal number to two decimal places
       intro();
       do
       {
              system("cls");
              cout << "\n\n\n\tMAIN MENU";
              cout << "\n\n\t01. RESULT MENU";
              cout << "\n\n\t02. ENTRY/EDIT MENU";
              cout << "\n\n\t03. EXIT";
              cout << "\n\n\tPlease Select Your Option (1-3) ";
              cin >> ch;
              switch (ch)
              {
              case '1': result();
                     break;
              case '2': entry_menu();
                     break;
              case '3':
                     break;
              default:cout << "\a";
              }
       } while (ch != '3');
       return 0;
}

//***************************************************************
//    function to write in file  http://cppexamples.blogspot.com/
//****************************************************************

void write_student()
{
       student st;
       ofstream outFile;
       outFile.open("student.dat", ios::binary | ios::app);
       st.getdata();
       outFile.write(reinterpret_cast<char *> (&st), sizeof(student));
       outFile.close();
       cout << "\n\nStudent record Has Been Created ";
       cin.ignore();
       cin.get();
}

//***************************************************************
//     function to read all records from file  http://cppexamples.blogspot.com/
//****************************************************************

void display_all()
{
       student st;
       ifstream inFile;
       inFile.open("student.dat", ios::binary);
       if (!inFile)
       {
              cout << "File could not be open !! Press any Key...";
              cin.ignore();
              cin.get();
              return;
       }
       cout << "\n\n\n\t\tDISPLAY ALL RECORD !!!\n\n";
       while (inFile.read(reinterpret_cast<char *> (&st), sizeof(student)))
       {
              st.showdata();
              cout << "\n\n====================================\n";
       }
       inFile.close();
       cin.ignore();
       cin.get();
}

//***************************************************************
//    function to read specific record from file
//****************************************************************

void display_sp(int n)
{
       student st;
       ifstream inFile;
       inFile.open("student.dat", ios::binary);
       if (!inFile)
       {
              cout << "File could not be open !! Press any Key...";
              cin.ignore();
              cin.get();
              return;
       }
       bool flag = false;
       while (inFile.read(reinterpret_cast<char *> (&st), sizeof(student)))
       {
              if (st.retrollno() == n)
              {
                     st.showdata();
                     flag = true;
              }
       }
       inFile.close();
       if (flag == false)
              cout << "\n\nrecord not exist";
       cin.ignore();
       cin.get();
}

//***************************************************************
//    function to modify record of file  http://cppexamples.blogspot.com/
//****************************************************************

void modify_student(int n)
{
       bool found = false;
       student st;
       fstream File;
       File.open("student.dat", ios::binary | ios::in | ios::out);
       if (!File)
       {
              cout << "File could not be open !! Press any Key...";
              cin.ignore();
              cin.get();
              return;
       }

       while (!File.eof() && found == false)
       {
              File.read(reinterpret_cast<char *> (&st), sizeof(student));
              if (st.retrollno() == n)
              {
                     st.showdata();
                     cout << "\n\nPlease Enter The New Details of student" << endl;
                     st.getdata();
                     int pos = (-1)*static_cast<int>(sizeof(st));
                     File.seekp(pos, ios::cur);
                     File.write(reinterpret_cast<char *> (&st), sizeof(student));
                     cout << "\n\n\t Record Updated";
                     found = true;
              }
       }
       File.close();
       if (found == false)
              cout << "\n\n Record Not Found ";
       cin.ignore();
       cin.get();

}

//***************************************************************
//    function to delete record of file
//****************************************************************

void delete_student(int n)
{
       student st;
       ifstream inFile;
       inFile.open("student.dat", ios::binary);
       if (!inFile)
       {
              cout << "File could not be open !! Press any Key...";
              cin.ignore();
              cin.get();
              return;
       }
       ofstream outFile;
       outFile.open("Temp.dat", ios::out);
       inFile.seekg(0, ios::beg);
       while (inFile.read(reinterpret_cast<char *> (&st), sizeof(student)))
       {
              if (st.retrollno() != n)
              {
                     outFile.write(reinterpret_cast<char *> (&st), sizeof(student));
              }
       }
       outFile.close();
       inFile.close();
       remove("student.dat");
       rename("Temp.dat", "student.dat");
       cout << "\n\n\tRecord Deleted ..";
       cin.ignore();
       cin.get();
}

//***************************************************************
//    function to display all students grade report  http://cppexamples.blogspot.com/
//****************************************************************

void class_result()
{
       student st;
       ifstream inFile;
       inFile.open("student.dat", ios::binary);
       if (!inFile)
       {
              cout << "File could not be open !! Press any Key...";
              cin.ignore();
              cin.get();
              return;
       }
       cout << "\n\n\t\tALL STUDENTS RESULT \n\n";
       cout << "==========================================================\n";
       cout << "R.No       Name        P   C   M   E   CS   %age   Grade" << endl;
       cout << "==========================================================\n";
       while (inFile.read(reinterpret_cast<char *> (&st), sizeof(student)))
       {
              st.show_tabular();
       }
       cin.ignore();
       cin.get();
       inFile.close();
}

//***************************************************************
//    function to display result menu  http://cppexamples.blogspot.com/
//****************************************************************

void result()
{
       char ch;
       int rno;
       system("cls");
       cout << "\n\n\n\tRESULT MENU";
       cout << "\n\n\n\t1. Class Result";
       cout << "\n\n\t2. Student Report Card";
       cout << "\n\n\t3. Back to Main Menu";
       cout << "\n\n\n\tEnter Choice (1/2/3)? ";
       cin >> ch;
       system("cls");
       switch (ch)
       {
       case '1':     class_result(); break;
       case '2':     cout << "\n\n\tEnter Roll Number Of Student : "; cin >> rno;
              display_sp(rno); break;
       case '3':     break;
       default:      cout << "\a";
       }
}

//***************************************************************
//    INTRODUCTION FUNCTION
//****************************************************************

void intro()
{
       cout << "\n\n\n\t\t  STUDENT";
       cout << "\n\n\t\tREPORT CARD";
       cout << "\n\n\t\t  PROJECT";
       cout << "\n\n\n\tMADE BY : C++ Solution";
       cout << "\n\tSCHOOL : CAMBRIDGE SCHOOL";
       cin.get();
}

//***************************************************************
//    ENTRY / EDIT MENU FUNCTION  http://cppexamples.blogspot.com/
//****************************************************************

void entry_menu()
{
       char ch;
       int num;
       system("cls");
       cout << "\n\n\n\tENTRY MENU";
       cout << "\n\n\t1.CREATE STUDENT RECORD";
       cout << "\n\n\t2.DISPLAY ALL STUDENTS RECORDS";
       cout << "\n\n\t3.SEARCH STUDENT RECORD ";
       cout << "\n\n\t4.MODIFY STUDENT RECORD";
       cout << "\n\n\t5.DELETE STUDENT RECORD";
       cout << "\n\n\t6.BACK TO MAIN MENU";
       cout << "\n\n\tPlease Enter Your Choice (1-6) ";
       cin >> ch;
       system("cls");
       switch (ch)
       {
       case '1':     write_student(); break;
       case '2':     display_all(); break;
       case '3':     cout << "\n\n\tPlease Enter The roll number "; cin >> num;
              display_sp(num); break;
       case '4':     cout << "\n\n\tPlease Enter The roll number "; cin >> num;
              modify_student(num); break;
       case '5':     cout << "\n\n\tPlease Enter The roll number "; cin >> num;
              delete_student(num); break;
       case '6':     break;
       default:      cout << "\a"; entry_menu();
       }
}

//***************************************************************
//                   END OF PROJECT  http://cppexamples.blogspot.com/

//***************************************************************

Output:


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