Thread: Flushing the output buffer from printfs?

I have this piece of code, used as a debugging tool:

printf("%d", p->digits[0]);
printf("%d", p->digits[0]);

It printed out 21. This is logically impossible, and it's not a junk number. I tried putting just the first line alone, and even the first line alone with different indexes and got correct output.

I figure the only possible way to get this error, and the trash numbers I got from

printf("%d", p->digits[0]);
printf("%d", p->digits[1]);

Is some sort of buffer flushing. How do I flush buffers in printf?


As a side note, p points to a structure from main() that I'm manipulating within a function. I don't think that's the problem though.

I tried both of those methods. fflush gave me large arbitray numbers as output, an intervening \n just gave me the 1 on a new line.

/change majors