ex7_24.h

//
//  ex7_24.cpp
//  Exercise 7.24
//
//  Created by pezy on 11/14/14.
//  Copyright (c) 2014 pezy. All rights reserved.
//

#ifndef CP5_ex7_24_h
#define CP5_ex7_24_h

#include <string>

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

    Screen() = default; // 1
    Screen(pos ht, pos wd) : height(ht), width(wd), contents(ht * wd, ' ') {} // 2
    Screen(pos ht, pos wd, char c) : height(ht), width(wd), contents(ht * wd, c)
    {
    } // 3

    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, width = 0;
    std::string contents;
};

#endif