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// condition_variable_any::wait_for example
#include <iostream> // std::cout
#include <thread> // std::thread
#include <chrono> // std::chrono::seconds
#include <mutex> // std::mutex
#include <condition_variable> // std::condition_variable_any, std::cv_status
std::condition_variable_any cv;
int value;
void read_value() {
std::cin >> value;
cv.notify_one();
}
int main ()
{
std::cout << "Please, enter an integer (I'll be printing dots): ";
std::thread th (read_value);
std::mutex mtx;
mtx.lock();
while (cv.wait_for(mtx,std::chrono::seconds(1))==std::cv_status::timeout) {
std::cout << '.';
}
std::cout << "You entered: " << value << '\n';
mtx.unlock();
th.join();
return 0;
}
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