openmp实验

#include "stdio.h"
#include<iostream>
using std::cin;
using std::cout;
using std::endl;
#include<time.h>
#include<stdlib.h>
#include <unistd.h>
int main()
{
   int nthreads, tid;
   int nprocs;
   char buf[32];
   omp_set_num_threads(11);
   int q[20];
   for(int i=0;i<20;i++)
    q[i]=rand()%1000000;
   int wait=1;
   int current=0;
   #pragma omp parallel private(nthreads, tid)
   {
      tid = omp_get_thread_num();
      if (tid==0) {
	int c=0;
         while(c<19){
    printf("question %d : %d + %d = ?n",c/2+1,q[c],q[c+1]);
    c+=2;
   }
   wait=0;
 }else{
  #pragma omp critical(a)
  {
	  while(true){
		  if(wait==0){
			  printf("my student number is %d question%d's answer is %d n",tid,current/2+1,q[current]+q[current+1]);
			  current+=2;
			  break;
		  }
	  }
  }
   }
   }
return 0;
}