Thread: output to file

  1. #1
    Registered User
    Join Date
    Apr 2003

    output to file

    if i have the following code
    #include <iostream.h>
    #include <conio.h>
    #include <fstream.h>
    #include <assert.h>
    #include <STDIO.h>

    //LEVEL ONE FUNCTION PROTOTYPES///////////////////////////////////////////
    void SaveToDisk(ofstream &neil);

    int main()
    ofstream neil;



    return 0;

    void SaveToDisk(ofstream &neil)

    //why wouldn't; work?


    where is the number1234 outputted to?-my floppy disk?
    also, why couldn't i use; where i have the comment?

  2. #2
    C++ Developer XSquared's Avatar
    Join Date
    Jun 2002
    Ontario, Canada
    1234 is written to the folder where your app is. If you wanted to write to the floppy, you could use "A:\\test_file.txt", or whatever your floppy drive letter is.

    You can't use test_file.c_str( ), because it will look for a variable named test_file, which isn't declared.
    Naturally I didn't feel inspired enough to read all the links for you, since I already slaved away for long hours under a blistering sun pressing the search button after typing four whole words! - Quzah

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  3. #3
    Registered User
    Join Date
    Nov 2002
    you could have asked this in your other thread right below this one.

  4. #4
    Registered User
    Join Date
    Nov 2002
    "test_file" This is a string literal
    string test_file; This is a string object

    The c_str() method is a member of a string object. You can use it to obtain a char* representation of the string.

    test_file.c_str() This is valid because test_file has been declared as a string object

    As for your file output, try this:

    #include <fstream>
    using namespace std;
    void SaveToDisk(ofstream & neil) {
            if(neil.is_open()) neil.close();
            neil <<1234 <<endl;

    This will write "1234" to the file c:\test_file.txt. Pretty straightforward.

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