How can I create a text file on ev3?

[thodec95]

Hi there,

I tried to create and open a text file on the ev3, but it doesnt work. I used a similar code to create a text file on windows and it worked. After running the code below on the ev3 the display showed "file could not be opened". Does someone no wheres the problem and how to make the program run?

include

include

include

int main() {

InitEV3();
setAllSensorMode(COL_COLOR, NO_SEN,NO_SEN, US_DIST_MM);

FILE *Datei;
char brett[8];

brett[0] = '1';
brett[1] = '7';
brett[2] = '7';
brett[3] = '6';

Datei = fopen ("test.txt", "w");

if(Datei == NULL) {

    TermPrintln("file could not be opened\n");

}else {

    TermPrintln("file opened\n");
    fprintf(Datei, "%s\n", brett);

    // Datei schliessen
    fclose(Datei);
}
ButtonWaitForPress(BUTTON_ID_ENTER);
FreeEV3();
return 0;

}

[a3f]

You may not have write permission in your current working directory. Try writing to /media/card/test.txt instead.

[thodec95]

It works. Thank you!

[a3f]

:)