Program that creates random numbers in a given file

Program that creates random numbers in a given file.

#include "stdio.h"
#include "conio.h"
#include "stdlib.h"

void main( )
{
FILE *fp ;
char str [ 67 ] ;
int i, noofr, j ;

clrscr( ) ;

printf ( "Enter file name: " ) ;
scanf ( "%s", str ) ;

printf ( "Enter number of records: " ) ;
scanf ( "%d", &noofr ) ;

fp = fopen ( str, "wb" ) ;
if ( fp == NULL )
{
printf ( "Unable to create file." ) ;
getch( ) ;
exit ( 0 ) ;
}

randomize( ) ;

for ( i = 0 ; i < noofr ; i++ )
{
j = random ( 1000 ) ;
fwrite ( &j, sizeof ( int ), 1, fp ) ;
printf ( "%d\t", j ) ;
}

fclose ( fp ) ;

printf ( "\nFile is created. \nPress any key to continue." ) ;

getch( ) ;
}