How to turn off buffering of stdout in C

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); } 

The code printf bunch of '.' only when buffer gets filled.

Answer 1

You can use the setvbuf function:

setvbuf(stdout, NULL, _IONBF, 0); 

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The link above has been broken. Here're another links to the function.

• POSIX

• C/C++