无法访问C ++类中的函数

Question

我正在开发一个程序，用于读取天气数据并将统计信息报告给用户。如果我在main中运行所有内容（不使用类），我知道我的程序完成了我需要它做的事情。我通过使用对象调用它来访问我的display()函数时遇到问题。

我对这一切都很陌生，所以如果有人能帮我理解我的错误在哪里，我真的很感激任何帮助。谢谢！

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

class Weather
{
private:
    static const int NUM_MONTHS = 3,
        DAYS_IN_MONTH = 30;

    const string name[NUM_MONTHS] = { "June", "July", "August" };
    char dayType[NUM_MONTHS][DAYS_IN_MONTH];

    int rainy;                 // Counts number of days of each type
    int cloudy;                 // during one particular month
    int sunny;
    int rainyTotal = 0;        // Counts number of days of each type
    int cloudyTotal = 0;        // during 3-month period
    int sunnyTotal = 0;
    int wettestMonth;           // Index of rainiest month
    int wettestMonthsRain = -1; // Number of rainy days in rainiest month
    int cloudiestMonth;
    int cloudiestMonthClouds = -1;
    int sunniestMonth;
    int sunniestMonthSun = -1;
public:
    void readFileData(char[][DAYS_IN_MONTH]); 
    void display();


};

Weather::Weather()
{
name: { "June", "July", "August"; }
}

void Weather::readFileData(char dayType[][DAYS_IN_MONTH])
{
    ifstream weatherData;

    //Open data file
    weatherData.open("weather.txt");
    if (!weatherData)
    {
        cout << "Could not open the data file.\n";
    }

    // Else, if file was opened correctly, read weather data into the array
    for (int month = 0; month < NUM_MONTHS; month++)
    {
        for (int day = 0; day < DAYS_IN_MONTH; day++)
            weatherData >> dayType[month][day];
    }
    // Close the data file
    weatherData.close();
}

void Weather::display()
{
    // Print report heading
    cout << "    Summer Weather Report\n\n"
        << "Month    Rainy  Cloudy  Sunny\n"
        << "_____________________________\n";

    // Accumulate and display weather statistics 
    for (int month = 0; month < NUM_MONTHS; month++)
    {
        // Reset accumulators
        rainy = cloudy = sunny = 0;

        // Accumulate weather statistics for current month 
        for (int day = 0; day < DAYS_IN_MONTH; day++)
        {
            if (dayType[month][day] == 'R')
                rainy++;
            else if (dayType[month][day] == 'C')
                cloudy++;
            else
                sunny++;
        }
        // Add monthly totals to grand totals
        rainyTotal += rainy;
        cloudyTotal += cloudy;
        sunnyTotal += sunny;

        // Determine if this month is the rainiest so far
        if (rainy > wettestMonthsRain)
        {
            wettestMonthsRain = rainy;
            wettestMonth = month;
        }
        // check if this month is the cloudiest month
        if (cloudy > cloudiestMonthClouds)
        {
            cloudiestMonthClouds = cloudy;
            cloudiestMonth = month;
        }
        //check if this month is the sunniest month
        if (sunny > sunniestMonthSun)
        {
            sunniestMonthSun = sunny;
            sunniestMonth = month;
        }
{

}
// Display this month's results 
cout << left << setw(6) << name[month]
<< right << setw(6) << rainy << setw(8) << cloudy
<< setw(7) << sunny << endl;
    }
    // Display summary data
    cout << "_____________________________\n";
    cout << "Totals" << setw(6) << rainyTotal << setw(8)
        << cloudyTotal << setw(7) << sunnyTotal << endl << endl;
    cout << "The month with the most rainy days was "
        << name[wettestMonth] << ".\n";
    cout << "The month with the most cloudy days was "
        << name[cloudiestMonth] << ".\n";
    cout << "The month with the most sunny days was "
        << name[sunniestMonth] << ".\n";
}


int main()
{
    //create object
    Weather summer;
    summer.display();

    return 0;
}

在我解决问题时进行编辑。添加了构造函数，允许我的程序编译，但现在我的几个月的总数都显示为零。非常感谢任何帮助！