int  v[ ]  =  {-1,  -3,  -5,  3,  -2};
  int*  p  =  find_first(v,  v  +  5,  even);
  if  (p  ==  v  +  5)  {
          cout  <<  "No  even  nums  found";
  }  else  {
          cout  <<  "First  even  num:  "  <<  *p;
  }
  cout  <<  endl;