I'm not sure what output would you like to to slow down. Could you be more specific?
I guess it is about printing output in a loop in that case you can use function which will wait some time after or before every cout.
For example you can make countdwn timer from 10 to 0 printing number every second:
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#include <iostream>
#include <thread>
#include <chrono>
int main() {
for (int i = 10; i >= 0; --i) {
std::cout << i << "\n";
std::this_thread::sleep_for(std::chrono::seconds(1));
}
return 0;
}
I hope it helps but without more data I'm afraid can't help you.