A tool for formatting the output Jubeat song information

Jubeat Info Output tool

/*
Data source: https://www53.atwiki.jp/cosmos_memo/pages/16.html
Input format: Singularity	xi	197	Lv 4 (295)	Lv 8 (625)	Lv 10 (958)
Output format:
Singularity xi  197 BSC 4
Singularity xi  197 ADV 8
Singularity xi  197 EXT 10
*/
#include "pch.h"
#include <iostream>
#include <fstream>
#include <string>
#include <regex>

struct Song_Info {
	std::string song_info = "0";
	int bsc_lv = 1;
	int adv_lv = 1;
	int ext_lv = 1;
};

int main()
{
	Song_Info info;
	std::string temp;
	std::ifstream input("JubeatInput.txt");

	while (std::getline(input, temp))
	{
		while (temp.find("Lv") == temp.npos)
		{
			std::string temp2;
			std::getline(input, temp2);
			temp += temp2;
		}

		std::string Lv_regex = "(Lv)(\\s)(\\d+)(\\s)(\\(\\d+\\))(\\t)(Lv)(\\s)(\\d+)(\\s)(\\(\\d+\\))(\\t)(Lv)(\\s)(\\d+)(\\s)(\\(\\d+\\))";
		std::regex r(Lv_regex);

		try
		{
			//store Lv info
			std::smatch result;
			std::regex_search(temp, result, r);
			info.bsc_lv = std::stoi(result.str(3));
			info.adv_lv = std::stoi(result.str(9));
			info.ext_lv = std::stoi(result.str(15));
			//store song info
			info.song_info = temp;
			info.song_info.erase(info.song_info.find("Lv"));

			//output
			std::ofstream output("JubeatOutput.txt", std::ofstream::app);
			output << info.song_info << "BSC" << '\t' << info.bsc_lv << '\n'
				<< info.song_info << "ADV" << '\t' << info.adv_lv << '\n'
				<< info.song_info << "EXT" << '\t' << info.ext_lv << '\n';

			output.close();
		}
		catch (...) {
			std::string fol_temp;
			std::getline(input, fol_temp);
			std::cerr << u8"Can't not read in your data. The error text is:" << temp << '\n'
				<< u8"The following text is:" << fol_temp << '\n';
		}
	}
	system("pause");
	return 0;
}

I fixed a bug. It would throw out an error when it tried to transfer data from multiple-line before.