C++ Help

[Cam]

Is it possible to take the contents of one variable and save it into a txt file? Do any of you guys know how to? I'm trying to work it out and curious to know if it's possible as it would help in a little code I'm making

[Richie]

cplusplus.com/doc/tutorial/

[Jordan]

There's more than one way to do it and it also depends on the variable that you want to print out, but here's the basic idea.

#include <fstream> // Provides you with objects and functions needed to write to and read from files

// We need this since we are using standard functions from the
// fstream which are part of the standard namespace. This makes
// it to where we don't have to write std:: infront of all the objects
// and functions from the fstream library. Ex: std::fstream is what
// we would have to write if we didn't include the standard namespace.
using namespace std;

int main(int argc, char **argv)
{
    int myVariable = 45;

    // Create an output stream and open the file for writing, or create it if it
    // doesn't exist. ios::out is a bitmask which lets the fstream object know that
    // we are going to be writing to the file
    fstream strm("myOutputFile.txt", ios::out);

    // Write to the file. Note that the << operator is overloaded and
    // knows how to write integers to file streams (meaning it is
    //converting your integer into ASCII characters for you).
    strm << myVariable;

    // close your file
    strm.close();

    return 0;
}

[Cam]

Apr 14, 2011 22:27:50 GMT Jordan said:

There's more than one way to do it and it also depends on the variable that you want to print out, but here's the basic idea.

#include <fstream> // Provides you with objects and functions needed to write to and read from files

// We need this since we are using standard functions from the
// fstream which are part of the standard namespace. This makes
// it to where we don't have to write std:: infront of all the objects
// and functions from the fstream library. Ex: std::fstream is what
// we would have to write if we didn't include the standard namespace.
using namespace std;

int main(int argc, char **argv)
{
    int myVariable = 45;

    // Create an output stream and open the file for writing, or create it if it
    // doesn't exist. ios::out is a bitmask which lets the fstream object know that
    // we are going to be writing to the file
    fstream strm("myOutputFile.txt", ios::out);

    // Write to the file. Note that the << operator is overloaded and
    // knows how to write integers to file streams (meaning it is
    //converting your integer into ASCII characters for you).
    strm << myVariable;

    // close your file
    strm.close();

    return 0;
}

I'll try that out soon, thanks!

[Jordan]

Glad to help, and let me know if you have anymore questions. I've been working on a data compression program which deals a lot with reading and writing to files so most of this stuff is fresh on my mind.