"如何在 C 中关闭标准输出的缓冲"

Question

I want to turn off the buffering for the stdout for getting the exact result for the following code

while(1) {
printf(".");
sleep(1);
}

Answer 1

You can use the setvbuf function<\/a> :

setvbuf(stdout, NULL, _IONBF, 0);

Answer 2

You can also use setbuf

setbuf(stdout, NULL);

This will take care of everything

Answer 3

Use fflush(FILE *stream) with stdout as the parameter.

http://www.elook.org/programming/c/fflush.html

Answer 4

You can do this:

write(1, ".", 1);

Answer 5

Use fflush(stdout)<\/code> . You can use it after every printf<\/code> call to force the buffer to flush.

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