// File: ex1-2.cpp - namespace std and the new header filenames
namespace mystuff 
{
	int cout = 5;
	double sqrt(double x) 
	{
		return x / 2.0;
	}
};

#include <iostream>
#include <cmath>
#include <cstring>
#include <cstdlib>
#include <cctype>
using namespace std;



int main(void)
{
//	char cout[32] = "This is a bad idea";
	char temp[80];
	cout << "hey\n";
	std::cout << "the square root of 2 is " << sqrt(2.) << endl;
	strcpy(temp,"hello");
	strcat(temp," there");
	std::cout << strlen(temp) << temp << endl;
	std::cout << atoi("4") << endl;
	std::cout << toupper('a') << endl;
	std::cout << (char)toupper('a') << endl;
	
	std::cout << mystuff::cout << ' ' << endl;
	
	std::cout << sqrt(5.75) << ' ' << mystuff::sqrt(5.75) << endl;
	
	return 0;
}