File Handling
#include <iostream> #include <fstream> using namespace std ; class File { string ItemName ; int code ; float price ; public: File (); // Constructer ~File (){}; // Destructer void writeData ( int ); void readData (); }; File :: File () { ItemName = "" ; code = 0 ; price = 0.0 ; } // Function to Handle Wrong Input template < typename T > T checkInput ( T Input , string content ) { while (! cin . good ()) { cout ...