학습용으로 다른 파일에서 여러 유형의 숫자를 정렬하고 싶습니다. 나는 double과 int를 올바르게 정렬 할 수 있었지만, 형식을 올바르게 지정하기 위해 자신의 형식 (카드 덱을 정렬하기 위해)을 얻을 수는 없습니다. 나는 그것을 Reader 클래스에 내 정렬 기능으로 축소 할 수있었습니다. 모든 종류의 오류가 발생합니다. 정확히 내가 뭘 잘못하고 있니? 또는 나는 무엇인가 놓치고 있냐? 모두들 고마워요. 제 문제를 분명하게 설명했으면 좋겠습니다. ,C++ 템플릿 및 클래스
error: no match for 'operator<' in '((Reader)this)->Reader::array[compareIndex] < ((Reader)this)->Reader::array[smallestIndex]'
error: cannot convert 'Card' to 'int' in initialization
error: no match for 'operator=' in '((Reader*)this)->Reader::array[smallestIndex] = temp'
내 코드
마지막 : 나는 카드에 대해 생성
내 파일
오류 ... ...
1 11 (meaning Jack of Diamonds)
2 8 (meaning 8 of hearts)
등 뭔가처럼 보이는 기본
#include <iostream>
#include "Reader.h"
#include "Card.h"
using namespace std;
int main() {
Reader<int> nums;
Reader<double> dubs;
Reader<Card> cards;
int number;
do {
cout << "Enter 1 if your file contains integers\n"
<< "Enter 2 if your file contains doubles\n"
<< "Enter 3 if your file contains Cards:\n"
<< "Enter a number: ";
cin >> number;
if (number == 1){
nums.open_IO();
nums.read_array();
nums.sort();
nums.write_array();
nums.close_IO();
} else if (number == 2){
dubs.open_IO();
dubs.read_array();
dubs.sort();
dubs.write_array();
dubs.close_IO();
} else if (number == 3){
cards.open_IO();
cards.read_array();
cards.sort();
cards.write_array();
cards.close_IO();
}
} while ((number != 1) && (number != 2) && (number != 3));
}
Reader.h
#ifndef READER_H
#define READER_H
#include <string>
#include <fstream>
using namespace std;
template <class rList>
class Reader {
public:
static const int SIZE = 50;
Reader();
bool open_IO();
void close_IO();
bool read_array();
bool write_array();
void sort();
private:
// Ask for the files
void ask_filenames();
rList array[SIZE];
int readSize;
// input file names and stream to get the data
string readFileName;
ifstream inFile;
// output file names and stream to get the data
string writeFileName;
ofstream outFile;
bool askedFileNames;
};
#endif
#include "Reader.cpp"
내 Reader.Cpp는 파일
// File: Reader.cpp
#ifndef READER_CPP
#define READER_CPP
#include "Reader.h"
#include <iostream>
using namespace std;
/***************************************************************************
* Contructors and modifying functions defined in "Reader.h"
***************************************************************************/
template <class rList>
Reader<rList>::Reader() {
askedFileNames = false;
readFileName = "";
writeFileName = "";
readSize = 0;
rList empty;
for(int i = 0; i<SIZE; i++) array[i]=empty;
}
template <class rList>
bool Reader<rList>::open_IO(){
if(!askedFileNames) ask_filenames();
inFile.open(readFileName.c_str()); //we can't pass a string, we need a char array
if(!inFile.is_open()) {
return false;
}
outFile.open(writeFileName.c_str());
if(!outFile.is_open()) {
inFile.close(); //inFile opened successfully so it needs to be closed now
return false;
}
return true;
}
template <class rList>
void Reader<rList>::close_IO() {
inFile.close();
outFile.close();
}
template <class rList>
bool Reader<rList>::read_array() {
if(inFile.is_open()) {
inFile >> readSize;
int index = 0;
while(!inFile.eof() && index < readSize) {
inFile >> array[index++]; //increments index after assigning value
}
readSize = index; //the input file could have had fewer numbers so set readSize
return true;
}
return false;
}
template <class rList>
bool Reader<rList>::write_array() {
if(outFile.is_open()) {
outFile << readSize << endl;
//don't forget the number indicating the element co
int index = 0;
while(index < readSize) {
outFile << array[index++] << endl;
}
return true;
}
return false;
}
template <class rList>
void Reader<rList>::sort() {
int startIndex = 0;
int compareIndex;
int smallestIndex;
bool smallerFound;
while(startIndex < readSize) {
smallestIndex = startIndex;
compareIndex = startIndex + 1;
smallerFound = false;
while(compareIndex < readSize) { //find the smallest value from the starting index
if(array[compareIndex] < array[smallestIndex]) {
smallestIndex = compareIndex;
smallerFound = true;
}
compareIndex++;
}
if(smallerFound) { //only swap the values if a smaller value is found
int temp = array[startIndex];
array[startIndex] = array[smallestIndex];
array[smallestIndex] = temp;
}
startIndex++;
}
}
/*--------------------------------------------------------------
This function asks the user for the filenames. This operation
is placed in a separate function because it is called multiple
times.
--------------------------------------------------------------*/
template <class rList>
void Reader<rList>::ask_filenames() {
cout << "Welcome. Please type in the name of the file to read the numbers.\n";
cin >> readFileName;
cout << "Thank you. Please type in the name of the file to write the numbers.\n";
cin >> writeFileName;
askedFileNames = true;
}
#endif
Card.h
#include <ostream>
#include <string>
#include "Reader.h"
using namespace std;
class Card{
public:
static const int SIZE = 50;
enum SUIT {clubs, diams, hears, spads };
enum RANK {ace=1, two, thr, fou, fiv, six, sev, eig, nin, ten, jac, que, kin};
Card();
Card(int newSuit, int newRank);
void change(int newSuit, int newRank);
friend ostream& operator << (ostream& out, Card theCard);
friend istream& operator >> (istream& in, Card theCard);
private:
void change_rank(int newRank);
void change_suit(int newSuit);
string get_rank() const;
string get_suit() const;
SUIT suit;
RANK rank;
};
Card.cpp
#include <iostream>
#include <string>
#include "Card.h"
using namespace std;
Card::Card() { suit = spads; rank = ace; }
Card::Card(int newSuit, int newRank) {
change(newSuit, newRank);
}
void Card::change(int newSuit, int newRank) {
change_suit(newSuit);
change_rank(newRank);
}
ostream& operator << (ostream& out, Card theCard) {
out << theCard.get_rank() << " of " << theCard.get_suit();
return out;
}
istream& operator >> (istream& in, Card theCard) {
int aSuit;
int aRank;
in >> aSuit >> aRank;
return in;
}
// private member functions to set the private variables with their
// corresponding values: integer input -> enumerated type;
void Card::change_rank(int newRank) {
if(newRank == ace) rank = ace;
else if(newRank == two) rank = two;
else if(newRank == thr) rank = thr;
else if(newRank == fou) rank = fou;
else if(newRank == fiv) rank = fiv;
else if(newRank == six) rank = six;
else if(newRank == sev) rank = sev;
else if(newRank == eig) rank = eig;
else if(newRank == nin) rank = nin;
else if(newRank == ten) rank = ten;
else if(newRank == jac) rank = jac;
else if(newRank == que) rank = que;
else if(newRank == kin) rank = kin;
}
void Card::change_suit(int newSuit) {
if(newSuit == clubs) suit = clubs;
else if(newSuit == spads) suit = spads;
else if(newSuit == diams) suit = diams;
else if(newSuit == hears) suit = hears;
}
// Private member functions to extract the information from the card
// class.
string Card::get_rank() const {
if(rank == ace) return "ace";
if(rank == two) return "two";
if(rank == thr) return "three";
if(rank == fou) return "four";
if(rank == fiv) return "five";
if(rank == six) return "six";
if(rank == sev) return "seven";
if(rank == eig) return "eight";
if(rank == nin) return "nine";
if(rank == ten) return "ten";
if(rank == jac) return "jack";
if(rank == que) return "queen";
if(rank == kin) return "king";
return "get_rank: error";
}
string Card::get_suit() const {
if(suit == diams) return "D";
if(suit == hears) return "H";
if(suit == spads) return "S";
if(suit == clubs) return "C";
return "get_suit: error";
}
이러한 오류는 줄 번호와 함께 있다고 가정합니다. 일부 연산자를 오버로드해야 정렬 할 수 있으며 오류는 어디에서 어떤 연산자를 오버로드해야하는지 알려줍니다. 암시 적으로 수행 할 수없는 int에 카드를 캐스팅하려고 시도하므로 이러한 변환을 명시해야합니다. – Benjamin
젠장, 그 말이 맞는 것 같아. 내가 프로그래밍 한 이후로 오랫동안 해왔다. 나는 그것을 잊어 버렸다. 정확히 어떻게 다시 할 수 있습니까? – Lindsiria