Inheritance_virtuail_function.cpp

Inheritance_virtuail_function.cpp

//
//  inheritance.cpp
//  CplusplusPractice
//
//  Created by masai on 2015/05/20.
//  Copyright (c) 2015年 masai. All rights reserved.
//

#include <iostream>
#include "Stream.hpp"
#include "InputStream.hpp"
#include "ArrayStream.hpp"

using namespace std;


bool Average(Stream& stream){
    int count;
        
    double avr = 0;
    
    for(count = 0; stream.Set(); ++count){
        avr += stream.Get();
    }
    
    if(count == 0){
        return false;
    }
    
    avr /= count;
    
    cout << "average is " << avr << endl;
    
    count = 0;
    
    return true;
}

int main(){
    
    // ArrayStream
    static const double array1[] = {1, 2, 3, 4, 5, 6, -1};
    
    static const double array2[] = {2, 4, 5, 6, 1, -1};
    
    static const double* const array[] = {array1, array2};
    
    // sizeは全体のメモリサイズ / 要素(最初の一つ目)のメモリサイズ
    static const int size = sizeof array / sizeof *array;

    for(int i = 0; i < size; ++i){
        ArrayStream stream(array[i]);
        if(! Average(stream)){
            //break;
        }
    }
    
    // InputStream
    while(true){
        InputStream stream;
        if(! Average(stream)){
            break;
        }
    }
    
}