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#include 
   
    #include 
    
     #include 
     
      #include 
      
       #include 
       
        #include 
        
         #include 
         
          #include 
          
           #include 
           
            using namespace std;int main() { string array_string[5] = {"why","do","bird","suddenly","appear"}; set
            
              set_a{"why","do","star","shinning","from","above"}; set
             
               set_b (array_string,array_string + 5); set
              
                set_union_,set_intersection_,set_difference_; for(auto iter : set_a){ cout << iter << " "; } cout << endl; for(auto iter : set_b){ cout << iter << " "; } cout << endl; cout << endl; set_union(set_b.begin(),set_b.end(),set_a.begin(),set_a.end(),inserter(set_union_,set_union_.begin())); for(auto iter : set_union_){ cout << iter << " "; } cout << endl; set_intersection(set_b.begin(),set_b.end(),set_a.begin(),set_a.end(),inserter(set_intersection_,set_intersection_.begin())); for(auto iter : set_intersection_){ cout << iter << " "; } cout << endl; set_difference(set_b.begin(),set_b.end(),set_a.begin(),set_a.end(),inserter(set_difference_,set_difference_.begin())); for(auto iter : set_difference_){ cout << iter << " "; } cout << endl; return 0;}
              
             
            
           
          
         
        
       
      
     
    
   

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