初学C++求助 出错的语句在程序里做了注释

初学C++求助
出错的语句在程序里做了注释： 谢谢
//demontrates of constructor and destructor
#include <iostream>
class NiaoRen{
      public:
      NiaoRen(int initialAge);
      ~NiaoRen();
      
      int GetAge();
      void SetAge(int age);
      void Meow();
      void Profession();
      //bool Accessment();
      private:
      int itsAge;
      
      };
      //GetAge, public accessor function
      //return value of itsAge member

/*bool NiaoRen::Accessment()
{
     std::cout <<"Good=1 or bad=0 guy\n" ;
      
      }*/
NiaoRen::NiaoRen(int initialAge)
{
      itsAge=initialAge;
      }
NiaoRen::~NiaoRen()
{
}
      
void NiaoRen::Profession()
{
     std::cout << "Programmer\n";
     }
int NiaoRen::GetAge()
{
      return itsAge;
     }
     //definition of SetAge, public
     //sets itsAge memeber
void NiaoRen::SetAge(int age)
{
    itsAge = age;
    //age=30;
     }
//meow method, returns void parameters:none action.prints meow on screen
void NiaoRen::Meow()
{
     std::cout << "Meow\n";
      }
int main()
{
    NiaoRen JiangBo(28);//default constructor
    //JiangBo.SetAge(30);
    //JiangBo.Meow();     
    std::cout << "NiaoRen was:\n";
    // std::cout << JiangBo GetAge() << " years old.\n\007";//这里出错
    // << " years old.\n";
    JiangBo.Meow();
    JiangBo.SetAge(30);
    std::cout << "Jiang Bo is a Niao Ren who is ";
    std::cout << JiangBo.GetAge() << " years old.\n\007";
   
    JiangBo.Meow();
    JiangBo.Profession();
            
    system("pause");
     }