1 #include <chrono> 2 #include <thread> 3 f3()4 void f3() { 5 int m; 6 m = 2; // thread 3 7 } 8 f2()9 void f2() { 10 int n; 11 n = 1; // thread 2 12 std::thread t3(f3); 13 t3.join(); 14 } 15 main()16 int main() { // main 17 std::thread t2(f2); 18 t2.join(); 19 return 0; 20 } 21