输出流无法正常工作

Question

我想制作一个使用气泡排序算法对输入程序中的某些数据进行排序并将排序后的值写入输出文件的程序-但是，一切似乎都很好，但是输出文件为空...

我尝试使用控制台作为输出，但没有帮助。我知道有用于气泡排序的函数，但是我在c ++主题中是个新手，希望对此有所了解。

#include <iostream>
#include <fstream>
#include <string>

struct Datas
{
    std::string day;
    float value;
};
using namespace std;

int main ()
{
    fstream file_in, file_out;
    string name, line, data;
    Datas current [7];

    cout << "Input file name with data to open" << endl;
    cin>>name;
    file_in.open(name.c_str());

    if (file_in.fail())
    {
        cout << "Unable to open file - try again" << endl;
        //  pause(TIME);
        system ("CLS"); //Clears the console
        main();
    } else {


        cout << "Input output file name to save sort datas" << endl;
        cin>>name;
        file_out.open(name.c_str());

        if (file_out.fail())
        {
            cout << "Unable to open file - try again" << endl;
        } else {

            while (file_in.eof() == 0)
            {
                for (int pointer = 0; pointer < 7; pointer++)
                {
                    file_in >> current[pointer].day >> current[pointer].value;
                }

                string tmp_day;
                float tmp_val;

                for (int current_val = 0; current_val < 7; current_val++)
                {
                    if (current[current_val].value > current[current_val+1].value ||
                        current[current_val].value > current[current_val+2].value ||
                        current[current_val].value > current[current_val+3].value ||
                        current[current_val].value > current[current_val+4].value ||
                        current[current_val].value > current[current_val+5].value ||
                        current[current_val].value > current[current_val+6].value )
                    {
                        tmp_day = current[current_val+1].day;
                        tmp_val = current[current_val+1].value;

                        current[current_val].day = tmp_day;
                        current[current_val].value = tmp_val;

                        tmp_day = current[current_val].day;
                        tmp_val = current[current_val].value;
                    }
                }

                for (int stream = 0; stream < 7; stream++)
                {
                    file_out << current[stream].day << '\t' << current[stream].value << endl;
                }
            }

            file_in.close();
            file_out.close();
            return 0;
            system("PAUSE");    //Keeps console window open after program execution
        }
    }
}