birdclasscompare.cpp

来自「C++ sample code, for the book: C++ blac」· C++ 代码 · 共 41 行

#include <iostream>
#include <string>
using namespace std;

class bird_class {     
public:         
    string name;              
    int number_seen;        
    void increment_count(){number_seen++;}
    bird_class(string text);
    const bird_class & compare(const bird_class & other_bird);
};

bird_class::bird_class(string text)
{
    name = text;
    number_seen = 0;
}

const bird_class & bird_class::compare(const bird_class & other_bird)
{
    if(number_seen > other_bird.number_seen)
        return *this;
    else
        return other_bird;
}

int main()
{
    bird_class orioles("oriole");
    bird_class robins("robin");

    orioles.increment_count();

    cout << "Type of most birds seen: " << orioles.compare(robins).name << endl;

    return 0;
}