/*	Macro definitions :
	*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>

#define ERROR		1
#define OK		0

#define BLOCKSIZE	82	/* Max. line length */

/*	Global variables : */

	FILE *inputFile;
	FILE *out1File;

	unsigned char inLine[BLOCKSIZE];
	unsigned char out1Line[BLOCKSIZE];


main()
{
/*	Functions called */
	void OpenFiles();
	void ConvertLine();

/*	Local arrays, structures and variables : */

	unsigned int processedLines, i;

	OpenFiles( );

	printf( "\n" );

	for ( processedLines = 0;
	      fgets( inLine, BLOCKSIZE, inputFile);
	      processedLines++) {
		if( inLine[0] == '\n' ) 
			fprintf( out1File, "\n" );
		else {
			ConvertLine( inLine, out1Line );
			fprintf( out1File, "%s", out1Line );
		} /* else */
	} /* for */

	printf( "\n-S- Total of %d lines processed", processedLines );
}

void ConvertLine( unsigned char *inL, unsigned char *outL )
{
/*	convert chars from Cyrillic to Latin */

/*	Local arrays, structures and variables : */

	static char alphabet[83] = {
"ABVGDEZhZIJKLMNOPRSTUFHCChShSht`Y'EJuYaabvgdezhzijklmnoprstufhcchshsht`y'ejujaEe"};

	static int alphaI[67] = {
/*	A  B  V  G  D  E  Zh Z  I  J   K   L   M   N   O   P   R   S   T   U   F */
	0, 1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21,
/*	H   C   CH  SH SHT   `  Y   '   E   Ju  Ja */
	22, 23, 24, 26, 28, 31, 32, 33, 34, 35, 37, 
/*	 a  b   v    g   d   e  zh   z   i   j   k   l   m   n   o   p   r   s */
	39, 40, 41, 42, 43, 44, 45, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 
/*	 t   u   f   h   c  ch  sh sht   `   y   '   e  ju  ja   E   e  */
	58, 59, 60, 61, 62, 63, 65, 67, 70, 71, 72, 73, 74, 76, 78, 79, 80 };

	int i, j, k, ind;

	for( i = j = 0; inL[i]; i++ ) {
		if( inL[i] < 128 || inL[i] > 193 )
			outL[j++] = inL[i];
		else {
			ind = inL[i] - 128;
			for( k = alphaI[ ind ]; k < alphaI[ ind+1 ]; k++ ) {
				outL[j++] = alphabet[k];
			} /* for */
		} /* else */
	} /* for */
	outL[j] = '\0';
} /* ConvertLine */

void OpenFiles( )
/*	opens input and output files */
{
/*	Local variables and arrays */

	unsigned int i;
	char token[21];

	printf(" \n-I- Enter INPUT file name > ");
	scanf("%s", token);
	inputFile = fopen( token, "r" );
	while(!inputFile) {
		printf("\n\007-W- Incorrect input file name '%s', re-enter >"
			,token );
		scanf("%s", token);
		inputFile = fopen( token, "r" );
	} /* while */

	printf("\n-S- File '%s' successfully opened", token );

	printf(" \n-I- Enter OUTPUT file name > ");
	scanf("%s", token);
	out1File = fopen( token, "w" );
	while( !out1File ) {
		printf("\n\007-W- Incorrect output file name '%s', re-enter >"
			,token );
		scanf("%s", token);
		out1File = fopen( token, "w" );
	} /* while */

	printf("\n-S- File '%s' successfully opened", token );

}