p250 输出缓冲区的刷新.cpp

#include <iostream>
#include<stdexcept>
using namespace std;
int main()
{
	int ival;
	cout << "hi!" << flush;
	cout << "hi!" << ends; 
	cout << "hi!" << endl; 
		 
	return 0;
}
/*
运行结果：

hi!hi! hi!		//注意有个空格 
请按任意键继续！ 
*/