/* http://www.mrwadlo.com */
#include <stdio.h>
#include <conio.h>

void showpercent(int percent);
void createfilename();

int mark;

char input1file[15];
char input2file[15];
char outputfile[15];

int main()
{
	long i;
	long file1size;
	long file2size;
	long file3size;
	char sym;
	int percent;
	long start, end;
	char ext;

	FILE *fpREAD1;
	FILE *fpREAD2;
	FILE *fpWRITE;

	clrscr();
	printf("\n WARNING: RESIZING FILES CAN MAKE A FILE UN-OPENABLE");




	do {
		printf("\n Enter First Filename Using 8.3 limit: ");
		scanf("%12s", &input1file);

		if ( fopen(input1file,"rb") )
		     break;
		else
		     printf(" %s <-- No Such File, Try Again!", input1file);

	} while ( 1 );

        
	do {
		printf(" Enter Second Filename Using 8.3 limit: ");
		scanf("%12s", &input2file);

		if ( fopen(input2file,"rb") )
		     break;
		else
		     printf(" %s <-- No Such File, Try Again!\n", input2file);

	} while ( 1 );





	createfilename();
	printf(" Outputting to: %s", outputfile);

	do {
		printf("\n  ");
		for ( i=0 ; i<38 ; i++ )
			printf("- ");

		fpREAD1 = fopen(input1file,"rb");
		fpREAD2 = fopen(input2file,"rb");
		fpWRITE = fopen(outputfile,"wb");
        
		fseek(fpREAD1, 0, SEEK_END);
		file1size = ftell(fpREAD1);
		rewind(fpREAD1);

                fseek(fpREAD2, 0, SEEK_END);
		file2size = ftell(fpREAD2);
		rewind(fpREAD2);

		printf("\n %12s Filesize = %ld", input1file, file1size);
		printf("\n %12s Filesize = %ld", input2file, file2size);

		

		printf("\n %12s ", input1file);
		percent = 0;

		for ( i=0 ; i < file1size ; i++ )
		{
			fread(&sym, 1, 1, fpREAD1);
			fwrite(&sym, 1, 1, fpWRITE);

		

			if ( 100*i/file1size > percent )
			{
				percent++;
				showpercent(percent);
			}
                
		}

		while (percent < 100 )
			showpercent(++percent);

		printf("\n %12s ", input2file);
		percent = 0;

		for ( i=0 ; i < file2size ; i++ )
		{
			fread(&sym, 1, 1, fpREAD2);
			fwrite(&sym, 1, 1, fpWRITE);

		

			if ( 100*i/file2size > percent )
			{
				percent++;
				showpercent(percent);
			}
                
		}

		while (percent < 100 )
			showpercent(++percent);




		printf("\n Done");
		file3size = ftell(fpWRITE);
		printf("\n The Final Filesize = %ld", file3size);
		printf("\n Filesize should be = %ld", file1size + file2size);

		fclose(fpREAD1);
		fclose(fpREAD2);
		fclose(fpWRITE);

                printf("\n Would you like to Recopy? Y/N");
		ext = getch();
		

	} while ( ext != 'n' && ext != 'N' );

	return 0;
}
void showpercent(int percent)
{
	if( percent % 2 == 0) 
	{
        		mark++;
		

			if ( mark % 2 == 0)
			{
				printf("%c",223);
                	}
			else
			{
				printf("%c",220);
			}

		printf(" %3d%%", percent);
		printf("\b\b\b\b\b");
        }
}
void createfilename()
{
	int i;

	for ( i=0 ; i<13 ; i++ )
	{
		if ( input1file[i] == '.' )
                        break;
		else
			outputfile[i] = 'O';
        }

	while ( i<13 && input1file[i] != '\n')
	{
		outputfile[i] = input1file[i];
		i++;
	}
}