如果你看一下我在类中的函数 CardCompare...它不起作用!但是,如果我改用 Hand.cpp 中注释掉的函数,它就可以正常工作。为什么是这样?
另外,我想知道将 CardCompare 函数保留在我的 hand 类中是否比将其保留在 Card 类中更有意义(如果可能的话)。
Hand.h
#ifndef HAND_H
#define HAND_H
#include <vector>
#include "Card.h"
class Hand {
private:
std::vector<Card> hand;
int total;
void CalculateTotal();
bool CardCompare (Card i, Card j) {return ( i.RankInt() < j.RankInt() ); }//Does not work! :O
public:
Hand() {
total = 0;
}
std::vector<Card> GetHand() const{ return hand;};
void PrintHand();
void AddToHand(Card c);
};
#endif
Hand.cpp
#include "Hand.h"
#include <iostream>
#include <algorithm>
void Hand::CalculateTotal() {
for (int i = 0; i < hand.size(); i++) {
std::cout << hand[i].ToString() << std::endl;
}
}
void Hand::PrintHand() {
for (int i = 0; i < hand.size(); i++) {
std::cout << hand[i].ToString() << std::endl;
}
std::cout << std::endl;
}
/* If I place this right here, it works perfect.
bool CardCompare (Card i, Card j) {return ( i.RankInt() < j.RankInt() ); }
*/
void Hand::AddToHand(Card c) {
hand.push_back(c);
std::sort(hand.begin(),hand.end(),CardCompare);
}
int main() {
Hand h;
h.PrintHand();
h.AddToHand(Card (2, ( Card::Suit )2 ) );
h.PrintHand();
h.AddToHand(Card (3, ( Card::Suit )3 ) );
h.PrintHand();
h.PrintHand();
h.AddToHand(Card (1, ( Card::Suit )2 ) );
h.PrintHand();
h.AddToHand(Card (13, ( Card::Suit )3 ) );
h.PrintHand();
std::cout<< std::endl << std::endl;
std::cout << h.GetHand()[0].ToString();
}
Card.h
#ifndef CARD_H
#define CARD_H
#include <string>
class Card {
public:
enum Suit {
SUIT_HEART,
SUIT_DIAMOND,
SUIT_CLUB,
SUIT_SPADE
};
Card(int r = 1, Suit s = SUIT_HEART) : rank(r), suit(s)
{}
int GetRank() const { return rank; };
Suit GetSuit() const { return suit; };
std::string ToString() const;
std::string SuitString() const;
std::string RankString() const;
int RankInt() const;
private:
int rank;
Suit suit;
static const char * ranknames[];
static const char * suitnames[];
static const int rankints[];
};
#endif
Card.cpp
#include <iostream>
#include "Card.h"
//#include <vector> //gtfo
const char * Card::ranknames[] = { "A", "2", "3", "4", "5", "6", "7", "8", "9", "10", "J", "Q", "K" };
const char * Card::suitnames[] = { "Hearts", "Diamonds", "Clubs", "Spaces" };
const int Card::rankints[] = {11, 2, 3, 4, 5, 6, 7, 8, 9, 10 ,10 ,10, 10 };
std::string Card::ToString() const {
std::string s = RankString();
s.append(" of ");
s.append(SuitString());
return s;
}
std::string Card::SuitString() const {
return suitnames[suit];
}
std::string Card::RankString() const {
return ranknames[rank-1];
}
int Card::RankInt() const {
return rankints[rank-1];
}
/*
int main() {
std::vector<Card> Deck;
for (int i = 0; i < 10 ; i++) {
Deck.push_back(Card(i+1,(Card::Suit)((i+1)%4)));
std::cout << Deck[i].ToString() << std::endl;
}
std::cout << std::endl << std::endl;
std::random_shuffle( Deck.begin(), Deck.end() );
for (int i = 0; i < 10 ; i++) {
std::cout << Deck[i].ToString() << std::endl;
}
}*/