Multipal inharitance error: conflicting

Hi,
I am getting error on doing multipal inheritance.
Please check the below code-

 class Hal
   {
     public:
       virtual int SetPrintLoss()
       {
        cout << "Hal::SetPrintLoss" << endl;
      }
  };
 class FluxGrid : public Hal
  {
    public:
       void SomeFunction()
       {
         cout << "FluxGrid::SomeFunction" << endl;
       }
  };
  class HalAmplifier
  {
    public:
      virtual void SetPrintLoss()
      {
        cout << "HalAmplifier::SetPrintLoss" << endl;
      }
  };
  class Simulator : public FluxGrid, public HalAmplifier
  {
    public:
      virtual void SetPrintLoss()
      {
        cout << "Simulator::SetPrintLoss" << endl;
      }
  };

I am getting error : -
 error: conflicting return type specified for =91virtual void Simulator::Se=
tPrintLoss()'
 error: overriding =91virtual int Hal::SetPrintLoss()'

please suggest me what to do now.