Untitled

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

using namespace std;

int main()
{
    Forests forest;
    forest.ReadingFile("Forests.txt");
    forest.PercentOfAllArea();
    forest.WoodToArea_ratio();


    for (int i = 0; i < 7; i++)
    {
        if (forest.area[i] > 300000 && forest.percentOfAllArea[i] > 0.1)
            cout << forest.name[i] << " " << forest.area[i] << " " << forest.wood[i] << " " <<
                forest.percentOfAllArea[i] << " " << forest.woodToAreaRatio[i] << "\n";
    }
}

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#include <iostream>
#include <fstream>
#include <cmath>
#include <sstream>

using namespace std;

class Forests
{
public:

	string name[7];
	long long area[7];
	long long wood[7];
	double percentOfAllArea[7];
	double woodToAreaRatio[7];

	long allArea = 8900000;

	void PercentOfAllArea()
	{
		for (int i = 0; i < 7; i++)
		{
			percentOfAllArea[i] = round((static_cast<double>(area[i]) / allArea)*1000)/1000;
		}
	}

	void WoodToArea_ratio()
	{
		for (int i = 0; i < 7; i++)
		{
			woodToAreaRatio[i] = static_cast<double>(wood[i]) / area[i];
		}
	}

	void ReadingFile(string file)
	{
		string path = file;
		ifstream fin;
		fin.open(path);

		if (!fin.is_open())
			cout << "Error";
		else
		{
			cout << "File is opened" << endl;
			string str;
			string word;

			for (int i = 0; i < 7; i++)
			{
				str.clear();
				getline(fin, str); //str - line
				istringstream ist(str);
				int index = 0;

				while (getline(ist, word, '-'))
				{
					switch (index)
					{
					case 0:
						name[i] = word;
						break;
					case 1:
						area[i] = stoll(word);
						break;
					case 2:
						wood[i] = stoll(word);
						break;
					}

					index++;

				}

			}

		}

	}

};