#include "header.h"

int main (void) 
{  
   FILE *fout;
   int i,n;
   int *a;
   double diff;
   time_t start,stop;
   char file[50];
   printf("input an integer n\n");
   scanf("%d",&n);
   a=(int *)malloc(n * sizeof(int));
   time(&start);
   prime(n,a);
   time(&stop);
   diff=stop-start;
   printf("use %.4lf seconds\n",diff);
   printf("enter the file name:\n");
   scanf("%s",file);
   fout=fopen(file,"w");
   for (i=0;i<n;i++) 
   {
      fprintf(fout,"%d\n",a[i]);
   }
   fclose(fout);
   free(a);
   return 0;
}