exercise7_24.h

#ifndef CP5_ex7_24_h
#define CP5_ex7_24_h
#include <string>

class Screen
{
public:
	using pos = std::string::size_type;

	Screen() = default;
	Screen(pos ht, pos wd) :height(ht), width(wd), contents(ht*wd, ' ') {}
	Screen(pos ht, pos wd, char c) :height(ht), width(wd), contents(ht*wd, c) {}

	char get() const { return contents[cursor]; }
	char get(pos r, pos c) const { return contents[r*width + c]; }

private:
	pos cursor = 0;
	pos height = 0;
	pos width = 0;
	std::string contents;
};

#endif