C equivalent of autoflush (flush stdout after each write)?
I haven't done this, but _IOLBF
would be the right answer.
$ man setvbufNAME setvbuf — assign buffering to a streamSYNOPSIS #include <stdio.h> int setvbuf(FILE *restrict stream, char *restrict buf, int type, size_t size);DESCRIPTION The functionality described on this reference page is aligned with the ISO C standard. Any conflict between the requirements described here and the ISO C standard is unintentional. This volume of POSIX.1‐2008 defers to the ISO C standard. The setvbuf() function may be used after the stream pointed to by stream is associated with an open file but before any other operation (other than an unsuccessful call to setvbuf()) is performed on the stream. The argument type determines how stream shall be buffered, as follows: * {_IOFBF} shall cause input/output to be fully buffered. * {_IOLBF} shall cause input/output to be line buffered. * {_IONBF} shall cause input/output to be unbuffered.