Matricu_Pervedimas_EdgarasKaziukonis

#include <iostream>
#include <string>
#include <iomanip>
#include <cmath>
#include <math.h>
#include <sstream>


using namespace std;
long double DecimalToOctal(string c);
string HEXToBinary(string c);
string DecimalToHEX (string c);
string BinaryToDecimal (string c );
string OctalToDecimal(string c);

int main()
{
    begin:
    int b1,b2;
    long double a;
    string binary, galutinis, result, HEX, c;
    setlocale(LC_ALL, "Lithuanian");
    cout << "Sveiki atvyke i skaiciavimo sistemu konvertoriu" << endl<<endl;
    cout<<"Iveskite konvertuojamu funkciju pagrindus"<<endl;
    cout<<"1: ";cin>>b1;
    cout<<"2: ";cin>>b2;
    if (b1==16&& b2==2)
     {
         cout<<"Konvertavimas "<<b1<<" ==> "<<b2<<endl;
        cout<<"Iveskite sesioliktaini skaiciavimo sistemos skaiciu"<<endl<<endl;
        cin>>c;
        cout.precision(20);
        cout<<"Rezultatas:"<<HEXToBinary(c)<<endl;
        goto begin;
    }

    if (b1==10&&b2==16)
    {
        cout<<"Konvertavimas "<<b1<<" ==> "<<b2<<endl;
         cout<<"Iveskite desimtaines skaiciavimo sistemos skaiciu"<<endl<<endl;
        cin>>c;
        cout.precision(20);
        cout<<"Rezultatas:"<<DecimalToHEX(c)<<endl;
        goto begin;
    }
    if (b1==2&& b2==10)
        {
            cout<<"Konvertavimas "<<b1<<" ==> "<<b2<<endl;
            cout<<"Iveskite dvejetaines skaiciavimo sistemos skaiciu"<<endl<<endl;
        cin>>c;
        cout.precision(20);
        cout<<"Rezultatas:"<<fixed<<BinaryToDecimal(c)<<endl;
        goto begin;

        }
    if (b1==10&& b2==2)
    {
        cout<<"Konvertavimas "<<b1<<" ==> "<<b2<<endl;
        cout<<"Iveskite desimtaines skaiciavimo sistemos skaiciu:"<<endl<<endl;
        cin>>c;
        cout.precision(20);
        cout<<"Rezultatas: "<<HEXToBinary(DecimalToHEX(c))<<endl;
        goto begin;
    }
    if (b1==2&& b2==16)
    {
        cout<<"Konvertavimas "<<b1<<" ==> "<<b2<<endl;
        cout<<"Iveskite dvejetaines skaiciavimo sistemos skaiciu:"<<endl<<endl;
        cin>>c;
        cout.precision(20);
        cout<<"Rezultatas: "<<DecimalToHEX(BinaryToDecimal(c))<<endl;
        goto begin;
    }
    if (b1==16&& b2==8)
    {
        cout<<"Konvertavimas "<<b1<<" ==> "<<b2<<endl;
        cout<<"Iveskite sesioliktaines skaiciavimo sistemos skaiciu:"<<endl<<endl;
        cin>>c;
        cout.precision(20);
        cout<<"Rezultatas: "<<DecimalToOctal(BinaryToDecimal(HEXToBinary(c)))<<endl;
        goto begin;
    }
    if (b1==16&& b2==10)
    {
        cout<<"Konvertavimas "<<b1<<" ==> "<<b2<<endl;
        cout<<"Iveskite sesioliktaines skaiciavimo sistemos skaiciu:"<<endl<<endl;
        cin>>c;
        cout.precision(20);
        cout<<"Rezultatas: "<<BinaryToDecimal(HEXToBinary(c))<<endl;
        goto begin;
    }
    if (b1==10&& b2==8)
    {
        cout<<"Konvertavimas "<<b1<<" ==> "<<b2<<endl;
        cout<<"Iveskite desimtaines skaiciavimo sistemos skaiciu:"<<endl<<endl;
        cin>>c;
        cout.precision(20);
        cout<<"Rezultatas:"<<DecimalToOctal(c)<<endl;
        goto begin;
    }
    if (b1==16&& b2==8)
    {
        cout<<"Konvertavimas "<<b1<<" ==> "<<b2<<endl;
        cout<<"Iveskite sesioliktaines skaiciavimo sistemos skaiciu:"<<endl<<endl;
        cin>>c;
        cout.precision(20);
        cout<<"Rezultatas: "<<DecimalToOctal(BinaryToDecimal(HEXToBinary(c)))<<endl;
        goto begin;
    }
    if (b1==8&& b2==10)
    {
        cout<<"Konvertavimas "<<b1<<" ==> "<<b2<<endl;
        cout<<"Iveskite astuntaines skaiciavimo sistemos skaiciu:"<<endl<<endl;
        cin>>c;
        cout.precision(20);
        cout<<"Rezultatas: "<<OctalToDecimal(c)<<endl;
        goto begin;
    }
    if (b1==8&& b2==16)
    {
        cout<<"Konvertavimas "<<b1<<" ==> "<<b2<<endl;
        cout<<"Iveskite astuntaines skaiciavimo sistemos skaiciu:"<<endl<<endl;
        cin>>c;
        cout.precision(20);
        cout<<"Rezultatas: "<<DecimalToHEX(OctalToDecimal(c))<<endl;
        goto begin;
    }
    if (b1==8&& b2==2)
    {
        cout<<"Konvertavimas "<<b1<<" ==> "<<b2<<endl;
        cout<<"Iveskite astuntaines skaiciavimo sistemos skaiciu:"<<endl<<endl;
        cin>>c;
        cout.precision(20);
        cout<<"Rezultatas: "<<HEXToBinary(DecimalToHEX(OctalToDecimal(c)))<<endl;
        goto begin;
    }
    if (b1==2&& b2==8)
    {
        cout<<"Konvertavimas "<<b1<<" ==> "<<b2<<endl;
        cout<<"Iveskite desimtaines skaiciavimo sistemos skaiciu:"<<endl<<endl;
        cin>>c;
        cout.precision(20);
        cout<<"Rezultatas: "<<DecimalToOctal(BinaryToDecimal(c))<<endl;
        goto begin;
    }
    return 0;
}
long double DecimalToOctal(string c)

{
    long long intbin=0, j=0, i = 0, rem=0, octal=0, intoctal1, k=0;
    long double octal1=0, res=0, trupm=0;
    string sskaic, ssveik,strupm,sres, sbinary,sdott;

    while(c[j]!=0)
    {
        sbinary=c[j];
        ssveik=ssveik+sbinary;
        j++;
        if (sbinary==".")
        {
            sdott=sbinary;
            while(c[j]!=0)
            {
                sbinary=c[j];
                strupm=strupm+sbinary;
                j++;
                k=1;

            }
        }
        strupm=sdott+strupm;

    }
     if(k=1)
     {
         stringstream str( strupm );
     str>>trupm;
     }
     stringstream str1( ssveik );
     str1>>intbin;
    i=1;
     while (intbin!= 0)
    {
        rem =intbin%8;
        intbin /= 8;
        octal += rem * i;
        i *= 10;
    }
    i=1;

            while (trupm!=0&&i<25)
        {
            trupm=trupm*8;
            intoctal1=trupm;
            octal1+=(intoctal1)*pow(10,(-i));
            trupm=trupm-intoctal1;
            i++;
        }
    res=octal+octal1;
    return res;
}
string HEXToBinary(string c)
{
    int sveik, n=0, i=0, h;
    string HEX,binary, galutinis, result;
    n=0;
    while (c[n]!=0)
    {
        HEX = c[n];
        n++;
        if (HEX=="0")
       {
           string binary="0000";
           result=binary;

       }

       if (HEX=="1")
       {
           string binary="0001";
           result=binary;

       }
       if (HEX=="2")
       {
           string binary="0010";
           result=binary;
       }
       if (HEX=="3")
       {
           string binary="0011";
           result=binary;
       }
       if (HEX=="4")
       {
           string binary="0100";
           result=binary;
       }
       if (HEX=="5")
       {
           string binary="0101";
           result=binary;
       }
       if (HEX=="6")
       {
           string binary="0110";
           result=binary;
       }
       if (HEX=="7")
       {
           string binary="0111";
           result=binary;
       }
        if (HEX=="8")
       {
           string binary="1000";
           result=binary;
       }
        if (HEX=="9")
       {
           string binary="1001";
           result=binary;
       }
        if (HEX=="A")
       {
           string binary="1010";
           result=binary;
       }
       if (HEX=="B")
       {
           string binary="1011";
           result=binary;
       }
        if (HEX=="C")
       {
           string binary="1100";
           result=binary;
       }
        if (HEX=="D")
       {
           string binary="1101";
           result=binary;
       }
        if (HEX=="E")
       {
           string binary="1110";
           result=binary;
       }
        if (HEX=="F")
       {
           string binary="1111";
           result=binary;
       }
        if (HEX==",")
        {
           string binary=".";
            result=binary;
        }
         if (HEX==".")
        {

           string binary=".";
            result=binary;
        }
       galutinis=galutinis+result;
    }
        return galutinis;

}
string DecimalToHEX (string c )
{
    long double trupm, a;
    int sveik, liek, n;
    string result, binary, galutinis;

    stringstream s_str( c );
    s_str>>setprecision(20)>>a;




    sveik=a;
    trupm=a-sveik;
    while (sveik!=0)
    {   liek=sveik;
        sveik=sveik/16;
        liek=liek%16;
    if (liek>=0)
       if (liek==0)
       {
           string binary="0";
           result=binary;

       }

       if (liek==1)
       {
           string binary="1";
           result=binary;

       }
       if (liek==2)
       {
           string binary="2";
           result=binary;
       }
       if (liek==3)
       {
           string binary="3";
           result=binary;
       }
       if (liek==4)
       {
           string binary="4";
           result=binary;
       }
       if (liek==5)
       {
           string binary="5";
           result=binary;
       }
       if (liek==6)
       {
           string binary="6";
           result=binary;
       }
       if (liek==7)
       {
           string binary="7";
           result=binary;
       }
        if (liek==8)
       {
           string binary="8";
           result=binary;
       }
        if (liek==9)
       {
           string binary="9";
           result=binary;
       }
        if (liek==10)
       {
           string binary="A";
           result=binary;
       }
       if (liek==11)
       {
           string binary="B";
           result=binary;
       }
        if (liek==12)
       {
           string binary="C";
           result=binary;
       }
        if (liek==13)
       {
           string binary="D";
           result=binary;
       }
        if (liek==14)
       {
           string binary="E";
           result=binary;
       }
        if (liek==15)
       {
           string binary="F";
           result=binary;
       }

       galutinis=result+galutinis;

    }
    if (trupm!=0)
    {
        string kablelis=".";
        galutinis=galutinis+kablelis;
        while (trupm!=0)
        {
            trupm=trupm*16;
            sveik=trupm;
        if (sveik==0)
        {
            binary="0";
            result=binary;

        }
        if (sveik==1)
       {
           string binary="1";
           result=binary;

       }
       if (sveik==2)
       {
           string binary="2";
           result=binary;
       }
       if (sveik==3)
       {
           string binary="3";
           result=binary;
       }
       if (sveik==4)
       {
           string binary="4";
           result=binary;
       }
       if (sveik==5)
       {
           string binary="5";
           result=binary;
       }
       if (sveik==6)
       {
           string binary="6";
           result=binary;
       }
       if (sveik==7)
       {
           string binary="7";
           result=binary;
       }
        if (sveik==8)
       {
           string binary="8";
           result=binary;
       }
        if (sveik==9)
       {
           string binary="9";
           result=binary;
       }
        if (sveik==10)
       {
           string binary="A";
           result=binary;
       }
       if (sveik==11)
       {
           string binary="B";
           result=binary;
       }
        if (sveik==12)
       {
           string binary="C";
           result=binary;
       }
        if (sveik==13)
       {
           string binary="D";
           result=binary;
       }
        if (sveik==14)
       {
           string binary="E";
           result=binary;
       }
        if (sveik==15)
       {
           string binary="F";
           result=binary;
       }
       galutinis=galutinis+result;
       trupm=trupm-sveik;
        }
    }
    return galutinis;
}

string BinaryToDecimal (string c )
{
    long long intbin=1, j=0, rem=0, galutinis=0,lyginti=0, trupm=1, i=0;
    long double decimal=0, decimal1=0, res=0, trupm2=1, fracpart, intpart;
    string ssveik, sbinary, strupm, sres, ssv, st;
    while(c[j]!=0)
    {
        sbinary=c[j];
        ssveik=ssveik+sbinary;
        j++;
        if (sbinary==".")
        {
            while(c[j]!=0)
            {
                sbinary=c[j];
                strupm=strupm+sbinary;
                j++;
            }
        }

    }
    i=1;
    j=0;
    while (strupm[i]!=0)
    {
        st=strupm[j];
        stringstream s_str( st );
        trupm=0;
        s_str>>trupm;
        rem = trupm%10;
        decimal1= decimal1 + rem*pow(0.5,i);
        ++i;
        j++;
    }
    i=0;
        stringstream s_str1( ssveik );
        s_str1>>setprecision(20)>>intbin;
    //intbin=bin;
    while (intbin!=0)
    {
        rem = intbin%10;
        intbin=intbin/10;
        decimal= decimal + rem*pow(2,i);
        ++i;
    }
    cout.precision(20);
    res=decimal+decimal1;
    ostringstream ss;
     ss <<setprecision(20)<<res;
     sres=ss.str();

   return sres;
}
string OctalToDecimal(string c)
{
    int decimal = 0, i = 0,j=0, rem=0, k=0, octal=0, octal1=0, inta;
    string sdecimal, ssveik, strupm, sbinary, sdott, sres;
    long double trupm=0, decimal1=0, res;
    while(c[j]!=0)
    {
        sbinary=c[j];
        ssveik=ssveik+sbinary;
        j++;
        if (sbinary==".")
        {
            while(c[j]!=0)
            {
                sbinary=c[j];
                strupm=sbinary+strupm;
                j++;
                k=1;

            }
        }

    }
     if(k=1)
     {
         stringstream str( strupm );
     str>>octal1;

     }
     stringstream str1( ssveik );
     str1>>octal;
    while (octal != 0)
    {
        rem = octal % 10;
        octal /= 10;
        decimal += rem * pow(8, i);
        ++i;
    }
    rem=0;
    i=1;
    if (k=1)
    {
            while (octal1 != 0)
        {
            rem = octal1 % 10;
            octal1 /= 10;
            decimal1 += rem * pow((0.125), i);
            ++i;

        }
    }
    res=decimal+decimal1;
    ostringstream ss;
    ss <<setprecision(20)<< res;
     sres=ss.str();

    return sres;
}