structured input

[VaMpZzz]

can someone help me with structured input how to create it

  struct clientData	// client data 
{ 
   int accNum;	        // accnr
   char Sur[15];	// surname
   char Name[10];	// name
   float balance;	// balance
};

[mutexe]

http://www.tutorialspoint.com/cprogramming/c_structures.htm

[VaMpZzz]

not exactly what i'm looking for

first of all i need input of one by one
would be nice if checked if accNum is not in use

something like that