Someone

#include <iostream>                                                                 
#include <QSqlDatabase>                                                             

int main() {                                                                        
        QSqlDatabase db = QSqlDatabase::addDatabase("QSQLITE");
        db.setDatabaseName("min.db");

        if(db.isOpen())
                std::cout << "true" << std::endl;
        else
                std::cout << "false" << std::endl;
}