/*
	Course Number   : ISYS 116
	Student Name    : Jason Gradziel
	Student Number  : 826-135-535
	Professors Name : Gene Rychlewski
	Class Name      : Thursday
	Lab Title       : File Input/Output - Write to File
	*/

#include <stdio.h>
#include <conio.h>
#include <stdlib.h>

FILE *Safe_fopen(char *, char *);
void Safe_fclose(FILE *);

typedef struct
{
	char	id_no[3];
	int 	q_o_h;
	double	price;
} PART_REC;

main()
{
	clrscr();
	FILE *input_file,
	     *output_file;
	PART_REC part;
	char input_file_name[51],
	     output_file_name[51];
	int record_count = 0;

	printf("\nEnter the name of the text file: ");
	gets(input_file_name);

	input_file = Safe_fopen(input_file_name, "r");
	printf("\nThe file was succfully opened.");

	printf("\nEnter the name of the sequential file: ");
	gets(output_file_name);

	output_file = Safe_fopen(output_file_name, "wb");

	while ( fscanf(input_file, "%s %d %lf", part.id_no, &part.q_o_h, &part.price) == 3)
	{
		fwrite(&part, sizeof(PART_REC), 1, output_file);
		++record_count;
	}

	printf("\n\n%d records were written.", record_count);

	Safe_fclose(input_file);
	//printf("\nThe file was closed succfully.");
	Safe_fclose(output_file);
	printf("\nThe file was closed succfully.");

	getch();
	return 0;
}

FILE * Safe_fopen(char *f_name, char *mode)
{
	FILE *file_ptr;

	if ( (file_ptr = fopen(f_name, mode)) == NULL)
	{
		fprintf(stderr, "\nError: File %s cannot be opened.", f_name);
		getch();
		exit(1);
	}
	return file_ptr;
}

void Safe_fclose(FILE *file_ptr)
{
	if ( fclose(file_ptr) == EOF)
	{
		fprintf(stderr, "\nError: The file cannot be closed.");
		getch();
		exit(1);
	}

        return;
}