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  1. #1
    Join Date
    Feb 2005

    Writing Structure to CSV file - won't work... HELP!

    I need to compute some values, place them in a structure containing two vector variables, and save them in a CSV file. Right now, I can't even generate a file. I wrote the structure definition and file writing code in a header file (after first borrowing it). I have a "button" that is supposed to trigger all of the activity. I'll attach the code below:


    #ifndef EINSTEIN_H
    #define EINSTEIN_H

    #include <stdio.h>

    struct SizeAll{
    int year;
    double R;

    int write_to_file(int count, struct SizeAll *data, char const *fileName)
    FILE *f = fopen(fileName, "w");
    if (f == NULL) return -1;
    while (count-- > 0) {
    // you might want to check for out-of-disk-space here, too
    fprintf(f, "%d,%d", data->year, data->R);
    return 0;


    private: System::Void button1_Click(System::Object^ sender, System::EventArgs^ e) {
    double R;
    int counter,year,retval;
    struct SizeAll Universe;
    char const NameFile[62]="D:\\Documents and Settings\\Jumbo\\Desktop\\Friedout.csv";

    Universe.R = 1;
    Universe.year = 2;

    for ( counter = 1 ; counter < 2 ; counter++ )
    R = R + 1;
    if (counter ==1)
    retval=write_to_file(1, &Universe, NameFile);


    Can anyone help me to get this to work? My grasp of pointers and how and when to use them evaporated long ago.

    Thank you!
    Last edited by Protocol; January 31st, 2013 at 10:18 AM.

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