//Main.cpp
#include<iostream.h>
#include"OSet.h"


void main()
{
	
	cout<<"本程序實現集合的并,交和差運算."<<endl;
	cout<<"* MakeSet1-1  MakeSet2-2  Union-u  Intersection-i  Difference-D  Quit-q *"<<endl;

	char cmd;
    OrderedSet *Set1=NULL, *Set2=NULL, *Set3=NULL;//注意為指針指定初值NULL,否則可能出現意外錯誤!
	do
	{
		do
		{
			cout<<"Please enter an operation:";
			cin>>cmd;
		}while(cmd!='1' && cmd!='2' && cmd!='u' && cmd!='U' && cmd!='i'
			&& cmd!='I' && cmd!='d' && cmd!='D' && cmd!='q' && cmd!='Q');

		switch(cmd)
		{
		case '1': CreateSet(Set1); cout<<"Set1:"; TraverseList(Set1); break;
		case '2': CreateSet(Set2); cout<<"Set2:"; TraverseList(Set2); break;
		case 'u': 
		case 'U': Union(Set3,Set1,Set2); cout<<"Set1和Set2的并集是:"; TraverseList(Set3);
			ClearList(Set3); break;
		case 'i':
		case 'I': Intersection(Set3,Set1,Set2); cout<<"Set1和Set2的交集是:"; TraverseList(Set3);
			ClearList(Set3); break;
		case 'd':
		case 'D': Difference(Set3,Set1,Set2); cout<<"Set1和Set2的差集是:"; TraverseList(Set3);
			ClearList(Set3); break;
		default: break;
		}
	}while(cmd!='q' && cmd!='Q');

	ClearList(Set1);
	ClearList(Set2);

	cout<<"謝謝使用!"<<endl;
}

//End.