/* A Sample Program to get some doubts clarified. It is one of my school programs... The program simply maintains a Student Database by storing the data in a Binary - .dat file. It has a write service and a specific read service to read only those entries with a Particular Grade. (Using seekg of course). I use pragma pack(1) to assign the smallest size to the student class, so that reading using seekg is possible. Made By - Kinshuk Vasisht */ #include #include #include #include #include #include #pragma pack(1) //So that the class size is minimum using namespace std; struct Student { void Get() { for(int i=0;i<100;i++) rn = 22600+(rand()%1000); cout<<"Enter Name of Student - ";cin.ignore();cin.getline(name,20); cout<<"Enter Percentage - ";cin>>tm; cout<<"Enter Grade Assigned - ";cin>>g; } void Put() { cout<25600) { fin.seekg(-4,fin.cur); fin.read((char*)&temp,33); fout.write((char*)&temp,33); } else { fin.seekg(19,fin.cur); } } } fin.close(); fout.close(); remove("Data\\CD.dat"); rename("Data\\CD2.dat","Data\\CD.dat"); } int main() { fstream file; start: cout<<"\t\t\tFILE MANAGEMENT"<>k;cout<>n; cout<>k; cout<<"\nStudents with Grade "<>n; Delete(file,n); cout<<"\nEntry with Roll No - "<

Binary File Streaming - Student Database