Is there a function for delay in Sololearn, Windows.h does not work

Question

https://code.sololearn.com/cqHiY8np45Wa/?ref=app

Answer 1

#include <iostream>
#include <unistd.h>
#include <sys/time.h>

using namespace std;

int main() {
timeval start, end;

gettimeofday(&start, 0);
cout << "Hello ";

sleep(0.8);

cout << "World" << endl;
gettimeofday(&end, 0);

cout << "start-time\t" << start.tv_sec << ':' << start.tv_usec << endl;
cout << "end-time\t" << end.tv_sec << ':' << end.tv_usec << endl;

return 0;
}

Answer 2

we cannot delay or pause code execution on c++ playground