1extern "C" void abort (void); 2 3main() 4{ 5 int i = 0; 6 7 #pragma omp parallel shared (i) 8 { 9 #pragma omp single 10 { 11 i++; 12 } 13 } 14 15 if (i != 1) 16 abort (); 17 18 return 0; 19} 20