C++Primer Plus --0a6 在多函数中使用using编译指令

#pragma region ourfunc1.cpp
//ourfunc1.cpp -- repositioning the using directive
#if 1
#include <iostream>
using namespace std; //affects all function definitions in this file 
void simon(int);

int main()
{
	simon(3);
	cout << "Pick an integer: ";
	int count;
	cin >> count;
	simon(count);
	cout << "Done!" << endl;
	return 0;
}

void simon(int n)	//define the simon()function
{
	using namespace std;
	cout << "Simon says touch your toes " << n << " times." << endl;
}	
#endif
#pragma endregion

运行效果，从这里看，C，C++差比不大，这都是基础