Question

C++

Create a C++ application that will exhibit concurrency concepts. Your application should create two threads that will act as counters. One thread should count up to 20. Once thread one reaches 20, then a second thread should be used to count down to 0.

Answer 1

#include 
#include 

using namespace std;

void countUp() {
   int i;
   for(i = 0; i <= 20; i++) {
      cout << i << endl;
   }
   cout << endl << endl;
}

void countDown() {
   int i;
   for(i = 20; i >= 0; i--) {
      cout << i << endl;
   }
}

int main() {
   thread countUpThread(countUp);
   countUpThread.join();
   thread countDownThread(countDown);
   countDownThread.join();
   return 0;
}