WAP of A menu-driven program for elementary database management

/*WAP of A menu-driven program for elementary database management */

#include<stdio.h>
#include<conio.h>
main( )
{
 FILE  *fp, *ft ;
 char  another, choice ; 
 struct emp 
 {
  char  name[40] ;
  int  age ;
  float  bs ;
 } ;
 struct emp  e ;
 char  empname[40] ;
 long int  recsize ;

 fp = fopen ( "EMP.DAT", "rb+" ) ;

 if ( fp == NULL )
 {
  fp = fopen ( "EMP.DAT", "wb+" ) ;

  if ( fp == NULL )
  {
   puts ( "Cannot open file" ) ;
   exit( ) ;
  }
 }

 recsize = sizeof ( e ) ;

 while ( 1 )
 {
  clrscr( ) ;

  gotoxy ( 30, 10 ) ;
  printf ( "1. Add Records" ) ;
  gotoxy ( 30, 12 ) ;
  printf ( "2. List Records" ) ;
  gotoxy ( 30, 14 ) ;
  printf ( "3. Modify Records" ) ;
  gotoxy ( 30, 16 ) ;
  printf ( "4. Delete Records" ) ;
  gotoxy ( 30, 18 ) ;
  printf ( "0. Exit" ) ;
  gotoxy ( 30, 20 ) ;
  printf ( "Your choice" ) ;

  fflush ( stdin ) ;
  choice = getche( ) ;
  switch ( choice )
  {
   case '1' :

    fseek ( fp, 0 , SEEK_END ) ;
    another = 'Y' ;

    while ( another == 'Y' )
    {
   printf ( "\nEnter name, age and basic sal. " ) ;
    scanf ( "%s %d %f", e.name, &e.age, &e.bs ) ;
     fwrite ( &e, recsize, 1, fp ) ; 
    printf ( "\nAdd another Record (Y/N) " ) ;
     fflush ( stdin ) ;
     another = getche( ) ;
    }

    break ;
   
   case '2' :

    rewind ( fp ) ;

    while ( fread ( &e, recsize, 1, fp ) == 1 )
   printf ( "\n%s %d %f", e.name, e.age, e.bs ) ; 

    break ;

   case '3' :

    another = 'Y' ;
    while ( another == 'Y' )
    {
   printf ( "\nEnter name of employee to modify " ) ;
     scanf ( "%s", empname ) ;

     rewind ( fp ) ;
    while ( fread ( &e, recsize, 1, fp ) == 1 )
     {   
     if ( strcmp ( e.name, empname ) == 0 )
      {
    printf ( "\nEnter new name, age & bs" ) ;
    scanf ( "%s %d %f", e.name, &e.age,&e.bs ) ;
     fseek ( fp, - recsize, SEEK_CUR ) ; 
      fwrite ( &e, recsize, 1, fp ) ; 
       break ; 
      }
     }

    printf ( "\nModify another Record (Y/N) " ) ;
     fflush ( stdin ) ;
     another = getche( ) ;
    }

    break ;
   
   case '4' :

    another = 'Y' ;
    while ( another == 'Y' )
    {
   printf ( "\nEnter name of employee to delete " ) ;
     scanf ( "%s", empname ) ;

     ft = fopen ( "TEMP.DAT", "wb" ) ;

     rewind ( fp ) ;
    while ( fread ( &e, recsize, 1, fp ) == 1 )
     {
     if ( strcmp ( e.name, empname ) != 0 )
      fwrite ( &e, recsize, 1, ft ) ; 
     }

     fclose ( fp ) ;
     fclose ( ft ) ;
     remove ( "EMP.DAT" ) ;
     rename ( "TEMP.DAT", "EMP.DAT" ) ;

     fp = fopen ( "EMP.DAT", "rb+" ) ;

    printf ( "Delete another Record(Y/N) " ) ;
     fflush ( stdin ) ;
     another = getche( ) ;
    }
    break ;

   case '0' :
    fclose ( fp ) ;
    exit( ) ;
  }
 }
 getch();
}