#include <iostream>
#include <stdlib.h>
using namespace std;
int main()
{
int num, i=0;
int bin[10] = {0};
cout <<"ingrese num n";
cin>>num;
cout<<"";
cout<<"Decimal a Octagonal: " << oct<<num<<endl;
cout<<"Decimal a Hexagonal: " << hex<<num<<endl;
cout<<"Decimal a Binario: ";
{
while(num)
{
if(num == 1)
{
bin[i] = num;
break;
}
bin[i]= num % 2;
num = num / 2;
++i;
}
for(i; i>=0; i--)
cout<< bin[i];
}
cout <<endl;
cin.get(); cin.get();
}