//文件名:CHAPTER7-12.cpp
#pragma warning(disable:4786)
#include <iostream>
#include <string>
#include <deque>
#if _MSC_VER > 1020   // if VC++ version is > 4.2
   using namespace std;  // std c++ libs implemented in std
#endif
#define OK 0 
#define INFO 1
#define WARNING 2
int main (void) 
{
	int return_code;
	deque<string> InfoMessages;
	deque<string> WarningMessages;
	InfoMessages.push_back("Info: Program started");
	WarningMessages.push_back("Warning: No Customer records have been found");
	return_code = OK; 
	if  (!InfoMessages.empty())  //判斷容器是否為空
	{    		InfoMessages.push_back("Informational Messages:");
     		return_code = INFO;
	}
	if  (!WarningMessages.empty()) //判斷容器是否為空
	{    	WarningMessages.push_back("Warning Messages:");
		return_code = WARNING;              
	}
	if (InfoMessages.empty() && WarningMessages.empty())  //判斷容器是否為空
	{	cout << "There were no messages " << endl;	}
	switch(return_code)
	{case 0:
		cout<<" Neither Informataion nor warning message"<<endl;
		break;
	case 1:
		cout<<InfoMessages[0]<<endl<<InfoMessages[1]<<endl;
		break;
	case 2:
		cout<<WarningMessages[1]<<endl<<WarningMessages[0]<<endl;
		break;
	}
	return return_code;
}