Question

Write a definition for a function TotalTeachers( ) in C++ to read each object of a binary file SCHOOLS.DAT, find the total number teachers, whose data is stored in the file and display the same. Assume that the file SCHOOLS.DAT is created with the help objects of class SCHOOLS, which is defined below :

class SCHOOLS
{
    int SCode;        //School Code
    char SName[20];   //School Name
    int NOT;          // Name of Teachers in the school

public:
    void Display()
    {
       cout<<SCode<<"#"<<SName<<"#" << NOT << endl;
       int RNOT() {return NOT;}
};

Answer 1

void putnot()
{
    cout <<NOT<< "  ";
}

void TotalTeachers()
{ 
     fstream f;
     SCHOOLS Stu;
     f.open("SCHOOLS.DAT", ios::in|ios::binary);
     cout << “\nTotal no. of Teachers : \n”;
     while((f.read((char*)&Stu, sizeof(Stu))) != NULL)
     Stu.putnot();
     f.close();
}