如何讓這個構造函數工作？

Question

我被困在如何使頭部類的構造函數。我知道這就是爲什麼我不能調用某些方法。我真的不知道該怎麼做，我試圖複製我們的老師教我們的方式，但它看起來並不像你所看到的那樣工作得很好。任何幫助表示讚賞。謝謝。

Main.cpp的文件

#include <iostream> 
#include <fstream> 
#include <string> 
#include <sstream> 
#include "WeatherForecaster.h" 

using namespace std; 

int main() { 

    ifstream ifs; 
    ifs.open("boulderData.txt"); 
    int counter = 0; 
    ForecastDay yearData[984]; 
    if(ifs.fail()){ 
     cout<<"File failed to open."<<endl; 
    }else{ 
     string line; 

     while(getline(ifs, line, '\n')){ 
      stringstream ss; 
      ss<<line; 
      string date1; 
      string date2; 
      getline(ss, date1, ','); 
      getline(ss, date2, ','); 

       string item; 
       yearData[counter].day = date1; 

       yearData[counter].forecastDay = date2; 

       getline(ss, item, ','); 
       size_t found = item.find(":"); 
       string s; 
       s = item.substr(found+1, item.length()-1); 
       yearData[counter].highTemp = stoi(s); 

       getline(ss, item, ','); 
       found = item.find(":"); 
       s = item.substr(found+1, item.length()-1); 

       yearData[counter].lowTemp = stoi(s); 

       getline(ss, item, ','); 
       yearData[counter].humidity = stoi(item); 

       getline(ss, item, ','); 
       yearData[counter].avgWind = stoi(item); 

       getline(ss, item, ','); 
       yearData[counter].avgWindDir = item; 

       getline(ss, item, ','); 
       yearData[counter].maxWind = stoi(item); 

       getline(ss, item, ','); 
       yearData[counter].maxWindDir = item; 

       getline(ss, item, ','); 
       yearData[counter].precip = stod(item); 

       counter++; 
     } 


    } 

    WeatherForecaster wf; 
    ForecastDay fd; 


    // wf.printLastDayItRained(fd); 

    double totalRain = wf.calculateTotalPrecipitation(); 
    cout << "Total rainfall: " << totalRain << endl; 

    /*cout<< "Enter a date:" << endl; 
    string date; 
    getline(cin, date); 
    wf.printForecastForDay(date);*/ 
} 

WeatherForecast頭文件

#ifndef WEATHERFORECASTER_H 
#define WEATHERFORECASTER_H 

#include <iostream> 


struct ForecastDay{ 
    std::string day; 
    std::string forecastDay; 
    int highTemp; 
    int lowTemp; 
    int humidity; 
    int avgWind; 
    std::string avgWindDir; 
    int maxWind; 
    std::string maxWindDir; 
    double precip; 

}; 


class WeatherForecaster 
{ 
    public: 
     WeatherForecaster(); 
     ~WeatherForecaster(); 
     void addDayToData(ForecastDay); 
     void printDaysInData(); 
     void printForecastForDay(std::string); 
     void printFourDayForecast(std::string); 
     double calculateTotalPrecipitation(); 
     void printLastDayItRained(); 
     void printLastDayAboveTemperature(int); 
     void printTemperatureForecastDifference(std::string); 
     void printPredictedVsActualRainfall(int); 
     std::string getFirstDayInData(); 
     std::string getLastDayInData(); 
    protected: 

    private: 
     int arrayLength = 984; 
     int index; 
     ForecastDay yearData[984]; 
}; 

#endif // WEATHERFORECASTER_H 

WeatherForecast.cpp錯誤：這裏原型WeatherForecast :: WeatherForecast

#include "WeatherForecaster.h" 
#include <iostream> 
#include <string> 

using namespace std; 

WeatherForecaster::WeatherForecaster(string d, string fd, int ht, int lt, int h, int aw, string awd, int mw, string mwd, double p){ 
    ForecastDay::day = d; 
    ForecastDay::forecastDay = fd; 
    ForecastDay::highTemp = ht; 
    ForecastDay::lowTemp = lt; 
    ForecastDay::humidity = h; 
    ForecastDay::avgWind = aw; 
    ForecastDay::avgWindDir = awd; 
    ForecastDay::maxWind = mw; 
    ForecastDay::maxWindDir = mwd; 
    ForecastDay::precip = p; 

} 

WeatherForecaster::~WeatherForecaster(){ 

} 

/*void addDayToData(ForecastDay yearData[]) { 

    for(int i = 0; i < 984; i++) { 
     if() 
    } 
}*/ 

void printDaysInData(ForecastDay yearData[]) { 
    for(int i = 0; i < 984; i++) { 
     if(yearData[i].day == yearData[i].forecastDay) { 
      cout << yearData[i].day << endl; 
     } 
    } 
} 
void printForecastForDay(ForecastDay yearData[], string date) { 
    for(int i = 0; i < 984; i++) { 
     if(date == yearData[i].day && date == yearData[i].forecastDay) 
      cout << "" << endl; 
      cout << "Forecast for " << yearData[i].day << ": " << endl; 
      cout << "H: " << yearData[i].highTemp << endl; 
      cout << "L: " << yearData[i].lowTemp << endl; 
      cout << "Humidity: " << yearData[i].humidity << endl; 
      cout << "Avg Wind: " << yearData[i].avgWind << endl; 
      cout << "Avg Wind Direction: " << yearData[i].avgWindDir << endl; 
      cout << "Max Wind: " << yearData[i].maxWind << endl; 
      cout << "Max Wind Direction: " << yearData[i].maxWindDir << endl; 
      cout << "Precipitation: " << yearData[i].precip << endl; 
    } 
} 
void printFourDayForecast(string) { 

} 
double calculateTotalPrecipitation(ForecastDay yearData[]) { 
    double totalRain = 0; 
    for(int i = 0; i < 984; i++) { 
     totalRain = totalRain + yearData[i].precip; 
    } 
    return totalRain; 
} 
void printLastDayItRained(ForecastDay yearData[]) { 
    string lastRained; 
    for(int i = 0; i < 984; i++) { 
     if(yearData[i].precip > 0) { 
      lastRained = yearData[i].day; 
      cout << lastRained << endl; 
     } 
    } 
} 

void printLastDayAboveTemperature(ForecastDay yearData[], int avgTemp) { 
    string lastTemp; 
    for(int i = 0; i < 984; i++) { 
     if(yearData[i].day == yearData[i].forecastDay) { 
      if(yearData[i].highTemp > avgTemp) { 
       lastTemp = yearData[i].day; 

      } 
     } 
    } 
    cout << lastTemp << endl; 
} 

void printTemperatureForecastDifference(ForecastDay yearData[], string date) { 
    for(int i = 0; i < 984; i++) { 
     if(yearData[i].forecastDay == date) { 
      cout << "Forecast for " << yearData[i].forecastDay << " issued on " << yearData[i].day << endl; 
      cout << "H: " << yearData[i].highTemp << endl; 
      cout << "L: " << yearData[i].lowTemp << endl; 

     } 

     if(yearData[i].forecastDay == date && yearData[i].day == date) { 
      cout << "Actual forecast for " << yearData[i].day << endl; 
      cout << "H: " << yearData[i].highTemp << endl; 
      cout << "L: " << yearData[i].lowTemp << endl; 
     } 
    } 

} 
void printPredictedVsActualRainfall(int) { 


} 
string getFirstDayInData(ForecastDay yearData[]) { 
    string date; 
    for(int i = 0; i < 984; i++) { 
     if(yearData[i].day == yearData[i].forecastDay) { 
      date = yearData[i].day; 
     } 
    } 
    return date; 
} 
string getLastDayInData(ForecastDay yearData[]) { 
    string date; 
    string currentDate; 
    for(int i = 0; i < 984; i++) { 
     if(yearData[i].day == yearData[i].forecastDay) { 
      date = yearData[i].day; 
     } 
    } 

    return date; 

} 

Answer 1

刪除所有不相關的噪音似乎（你的）問題之一：

class WeatherForecaster 
{ 
    public: 
     // you declare a constructor that does not take any variables 
     WeatherForecaster(); 

    // ... 
}; 

定義是否匹配？

// you define a constructor that takes three and a half million variables!!! 
WeatherForecaster::WeatherForecaster(string d, string fd, int ht, int lt, int h, int aw, string awd, int mw, string mwd, double p){ 

    // ...  
} 

你需要讓你的構造函數聲明和定義互相匹配，以及你打算如何構造這個類的對象。