新建 文本文档 (2).txt

语法分析器,很好的,同学写的,认为不错 .

cin.get(ch);
	while(flag == true)
	{
		stack.PrintElem();
		popchar = stack.Pop();cout << popchar << endl;
		if(IsTerminal(popchar))
		{
			if(popchar == ch)
			{	ch = cin.get();
				cout << ch;
			}
			else
			{	OutputError();
		//		break;
			}
		}
		else if(popchar == '#')
		{
			if(popchar == ch)
				flag = false;
			else 
			{
				OutputError();
		//		break;
			}
		}
		else if(IsInPredictTable(popchar,ch))
		{
			ReversePush(popchar,ch,stack);
			
		}
		else break;