#include<iostream.h>

void main()
{
  int b[16],hh[16],oct[16],oc,d,i=0,ih=0,io=0,dh,x,h,od,j;

  cout<<"\t\"Converting Decimal to Binary,HexaDecimal,and Octal\"\n\n"
        <<"\nEnter a decimal number to convert it:";
  cin>>d;
  x=d;
  dh=d;
  od=d;
  if (d>=0)
  {
     while(d>0)
     {
        b[i]=d%2;
        d=d/2;
        i++;
     }

     while(dh>0)
     {
        h=dh%16;
        dh=dh/16;
        hh[ih]=h;
        ih++;
     }

     while(od>0)
    {
      oc=od%8;
      od=od/8;
      oct[io]=oc;
      io++;
    }

          if(x!=0)
            {
              cout<<endl
                    <<x
                    <<" in decimal = (";
              for(int j=i-1; j>=0; j--)
                cout<<b[j];
                cout<<") in binary\n";

                cout<<endl
                     <<x
                     <<" in decimal = (";
                for( j=ih-1; j>=0; j--)
                {
                  if (hh[j]==10) cout<<'A';
                  else if (hh[j]==11) cout<<'B';
                  else if (hh[j]==12) cout<<'C';
                  else if (hh[j]==13) cout<<'D';
                  else if (hh[j]==14) cout<<'E';
                  else if (hh[j]==15) cout<<'F';
                  else
                  cout<<hh[j];
                }
                cout<<") in Hexadecimal\n";

                cout<<endl
                     <<x
                     <<" in decimal = (";
              for( j=io-1; j>=0; j--)
                cout<<oct[j];
                cout<<") in Octal\n";
         }
         else
         {  cout<<endl
                     <<x
                     <<" in decimal = (";
            cout<<"0) in Binary,Hexadecimal,and Octal ";
          }
  }
  else
  cout<<"\n\nWrong input.";
}