How do you write the same bytes twice in C?

Question

short i = 1;
fwrite(&i, sizeof(i), 1, file);
fwrite(&i, sizeof(i), 1, file);

Is that proper? I want to write the same i twice.

Answer 1

There's nothing wrong with it; just remember to check the return value.

Answer 2

Yes, that will work fine. Alternatively you could declare an array of two and use a single fwrite , which would theoretically be more efficient:

short i[2] = {1, 1};
fwrite(i, sizeof(short), 2, file);