use the system date as filename

[dwinters]

I want to output data to file that has a name of the current date on the computer. I used myInFile.open(date.c_str()) where date was set to the current system date. When I run the program it doesn't create the file. Is there something I'm doing wrong?

[ARWA]

acording to my knowledg we us the bilt in functio c_str() if we will give the user an option
and that will help to convert the string into the c language
i usually do the following

[code] myInfile.open("name of the file.txt");/[code]

and if the file you want to open is in the note bad or somth you do the following
[code]muInfile.open("c;\\docoments\\data.txt");[code]
and this is gust an example but the hole bath of the file.

[dwinters]

I am using the c_str() function but the file still isn't showing up in the directory. I'm using Visual Studio 2008 and the file never shows up in the directory.

[Zhuge]

What does your code look like? Are you using an ostream?

[Computergeek01]

Specifically what is the directory you are typing to save the file to? If you have a typo here the compiler might just assume it's a relative path and start making directories in your working folder, they are not perfect creatures.

[tajendra]

Check following things :-

1) type of stream you are using.
2) You want file in current directory or some where else.

[Liger XT5]

With a look at: http://www.cplusplus.com/reference/clibrary/ctime/strftime/

I formed the time manually.
Example of what I did:

        time_t rawtime;
                struct tm * timeinfo;
                char buffer [80];
                time ( &rawtime );

                timeinfo = localtime ( &rawtime );
                strftime (buffer,80,"%m-%d-%y %H:%M.txt",timeinfo); // NOTE: the ":" will not work, file name was "03-08-10 15" after output. Try using a different symbol, I'm going to use "+" in mine.
                dateTime = buffer;
                cout << "\n\n>>Saved to " << dateTime << endl;

                /* Create File for later editing */

         FILE * pFile;
         pFile = fopen (dateTime.c_str(),"w");
         fclose (pFile);

        ofstream myfile;
        myfile.open (dateTime.c_str());