patterncppCritical

Sleep for milliseconds

Submitted by: @import:stackoverflow-api·Mar 10, 2026·

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millisecondssleepfor

Problem

I know the POSIX sleep(x) function makes the program sleep for x seconds. Is there a function to make the program sleep for x milliseconds in C++?

Note that there is no standard C API for milliseconds, so (on Unix) you will have to settle for usleep, which accepts microseconds:

#include 

unsigned int microseconds;
...
usleep(microseconds);

#include <unistd.h>

unsigned int microseconds;
...
usleep(microseconds);

Stack Overflow Q#4184468, score: 533

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