devkitPro

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#include <nds.h>
#include <fat.h>
#include <stdio.h>

void pause()
{
    // Wait for redraw of the display
    swiWaitForVBlank();
    
    // Tell the user what to do and wait
    iprintf("Press START to continue\n");
    do
    {
        scanKeys();
    } while (!(keysDown() & KEY_START));
    return;
}

int main(int argc, char **argv)
{
    consoleDemoInit();
    iprintf("Initialize libfat...\n");
    if (!fatInitDefault())
    {
        iprintf("Could not initialize libfat!\n");
        pause();
        return 0;
    }
    
    iprintf("Begin write...\n");
    pause();
    FILE *fp = fopen("/text.txt", "w");
    if(fp == NULL)
    {
        iprintf("Writing /text.txt: Error!\n");
        pause();
        return 0;
    }
    else
    {
        iprintf("Write something to /text.txt\n");
        int test = fprintf(fp, "Test\n");
        fclose(fp);
        if (test <= 0)
        {
            iprintf("Didn't work... BUT WHY???\n");
        }
        else
        {
            iprintf("Number of chars: %d\n", test);
        }
    }
    pause();
    return 0;
}

Code: Select all

fclose(fp);