#include <stdlib.h>
#include <stdio.h>
#include <iostream.h>
#include <iomanip.h>
#include <locale.h>
#include <ctype.h>
#include <iconv.h>

int main()
{
    cout << hex;
	/*
	    Unicode value of russian 'o' is 0x43e, the value in KOI8-R encoding
	    is 207 (0xcf).	
	*/    
    {
	short val = 0x3e04;
	iconv_t cd = iconv_open("KOI8-R","UCS2");
	if (cd==(iconv_t)-1) {
	    cout << "can't open iconv_t for conversion from \"UCS2\" to  \"KOI8-R\"\n";
	    return 1;
	};
	char buf[10];	
	char* in =(char*)&val,*out = buf;
	size_t inlen = 2, outlen = 1;
	size_t done = iconv(cd,(const char**)&in,&inlen,&out,&outlen);
	if (inlen==0) {
	    cout << "conversion from \"UCS2\" to  \"KOI8-R\" OK "
	    "with 0x" << val << " on input and 0x" << 
	    unsigned((unsigned char)(buf[0])) << " on output\n";	    
	} else {
	    cout << "conversion from \"UCS2\" to  \"KOI8-R\" failed "
	    "with 0x" << val << " on input\n";
	};
	cout << "iconv returned " << done << "\n";
    }

    {
	short val = 0x043e;/*swapped bytes*/
	iconv_t cd = iconv_open("KOI8-R","UCS2");
	if (cd==(iconv_t)-1) {
	    cout << "can't open cd1\n";
	    return 2;
	};
	char buf[10];	
	char* in =(char*)&val,*out = buf;
	size_t inlen = 2, outlen = 1;
	size_t done = iconv(cd,(const char**)&in,&inlen,&out,&outlen);
	if (inlen==0) {
	    cout << "conversion from \"UCS2\" to  \"KOI8-R\" OK "
	    "with 0x" << val << " on input and 0x" << 
	    unsigned((unsigned char)(buf[0])) << " on output\n";	    
	} else {
	    cout << "conversion from \"UCS2\" to  \"KOI8-R\" failed "
	    "with 0x" << val << " on input\n";
	};
	cout << "iconv returned " << done << "\n";	
    }

    {
	short val[1];
	iconv_t cd = iconv_open("UCS2","KOI8-R");
	if (cd==(iconv_t)-1)
	    cout << "can't open can't open iconv_t for conversion from \"KOI8-R\" to  \"UCS2\"\n";
	
	char buf = 207 ;	
	char* in = &buf,*out = (char*)val;
	size_t inlen = 1, outlen = 10;
	size_t done = iconv(cd,(const char**)&in,&inlen,&out,&outlen);
	if (inlen==0) {
	    cout << "conversion from \"KOI8-R\" to  \"UCS2\" OK "
	    "with 0x" << unsigned((unsigned char)buf) << " on input and 0x" << 
	    val[0] << " on output\n";	    
	} else {
	    cout << "conversion from \"KOI8-R\" to  \"UCS2\" failed "
	    "with 0x" << val[0] << " on input\n";
	};
	cout << "iconv returned " << done << "\n";	
    }

};