Build your logic based on the following example. int main( ) { char n ; int no = 0 ; printf("Enter a no " ); while( (n = (char)getche( )) != '\r') //Check for enter key { if( n >= '0' && n <= '9' ) { n = n - 48 ; no = (no * 10) + n ; } else{ printf("\nInvalid. "); } } printf("\n %d " , no ) ; return 0 ; }

I think you should clear the view before updating.

As far as I am aware, CDatabase class will throw a Database exception (CDBException) and not CFileException.

Great, As for i am aware, the compiler should not allow it, and even if it allows what is the use of it when the class is abstract. P.S: I have checked with VC++7.0, it gives an error

I have the following questions : 1.Which version of VC++ compiler did you use? 2.What is your understanding of pure virtual functions?

Yes.

The basic difference between a class and struct is with respect to scope. The class members are default private and struct members are public. In addition to this a struct should be used the way it is done in c and use class where you need attributes and behaviours.

Please ignore this, as my browser had some problem. thanks Mahesh

If you have worked with classes then replace class with struct. Ex: struct a{ } ; struct b : public a{ };

If you are aware of inheritence using classes then replace the class keyword with struct.(Note: Try this with C++ only) Ex: struct a{ } ; struct a : public b{ private: ---- protected : ----- public : ----- } ;

Look at ADO. Using ADO I think you will be able to read .xls , .txt , .mdb ,..... files.

See in MSDN for the topic : Linker Tools Error LNK2001

Add MFC support to your program

Use choice = (char)toupper( choice ) ; switch( choice ) { case 'M' : ---------- ---------- break ; case 'C' : ----------- ---------- break ; }

I think you should reffer to some good books on C and C++ (Ex: C and C++ Programmers Bible)

Have a look at Managed C++

Since you have not described your problem, my gues on seeing your code is that you should have a default constructor in the baby class.

Thank You

How do i write a server that supports multiple clients using MFC Socket classes? Thanks

I think you should refer to MSDN. MSDN has lot of information on this.