I have the following cpp code and it output a file name called ‘output.txt(0,0)-(3,5)’. Is there a way to avoid single quote in the filename?

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

int main() {
    // Define the filename as a std::string
    std::string filename = "output.txt" + std::string("(0,0)-(3,5)");


    // Open a file for writing using std::ofstream
    std::ofstream outputFile(filename);

    // Check if the file was opened successfully
    if (outputFile.is_open()) {
        // Write some data to the file
        outputFile << "Hello, world!n";
        outputFile << "This is a C++ program.n";
        outputFile << "Writing to files is fun!n";

        // Close the file
        outputFile.close();
        std::cout << "Data has been written to the file '" << filename << "' successfully.n";
    } else {
        // If the file couldn't be opened, print an error message
        std::cerr << "Unable to open file '" << filename << "' for writing.n";
    }

    return 0;
}