/** * flush.c * * Demonstrates flushing the stdout buffer in C * * Things to try: * - Time this program (`time ./flush`) * - Time the program again without doing the fflush. Is it faster? * - Disable the fflush, segfault the program midway. What prints? * * Compile: gcc -g -Wall -o flush flush.c * Run: ./flush */ #include int main() { int i; for (i = 0; i < 1000000; ++i) { printf("%d ", i); /* We'll flush the output here. This ensures that everything has been * printed to the terminal before continuing -- useful for debugging. */ fflush(stdout); } return 0; }