ADD file via upload

课设2.cpp

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+#include <iostream>
+#include <fstream>
+#include <sstream>
+#include <string>
+#include <vector>
+
+using namespace std;
+
+struct WeatherData
+{
+    string cityName;
+    int temperature;
+    int humidity;
+    int windSpeed;
+};
+bool readWeatherData(const string& filename, vector<WeatherData>& data)
+{
+    ifstream File;
+    File.open(filename);
+    
+
+    if(File.is_open())
+	{
+	    string line;
+    	char ws;
+	    while (getline(File, line))
+        {
+            istringstream iss(line);
+            WeatherData weather;
+
+            if (getline(iss, weather.cityName, ',') &&
+                (iss >> weather.temperature >> ws >> weather.humidity >> ws >> weather.windSpeed))
+            {
+                data.push_back(weather);
+            }
+	}
+    
+    }
+    else
+    {
+        cout << "无法打开文件 " << filename << endl;
+        return false;
+    }
+    File.close();
+    return true;
+}
+
+void findAndDisplayWeather(const string& cityName, const vector<WeatherData>& data)
+{
+    bool found = false;
+    for (const auto& weather : data)
+    {
+        if (weather.cityName == cityName)
+        {
+            found = true;
+            cout << cityName << "的天气数据为：温度" << weather.temperature
+                 << ", 湿度" << weather.humidity
+                 << ", 风速" << weather.windSpeed << endl;
+            return;
+        }
+    }
+
+    if (!found)
+    {
+        cout << "未找到城市 " << cityName << " 的天气数据。" << endl;
+    }
+}
+
+int main()
+{
+    string filename;
+    cout << "请输入文件名：";
+    cin >> filename;
+
+    string cityName;
+    cout << "请输入要检索的城市名：";
+    cin >> cityName;
+
+    vector<WeatherData> weatherData;
+    if (!readWeatherData(filename, weatherData))
+    {
+        return 1; 
+    }
+
+    findAndDisplayWeather(cityName, weatherData);
+
+    return 0;
+}
+