int main()
{
FILE *fin=fopen("pprime.in","r");
FILE *fout=fopen("pprime.out","w");
int a,b,i,num;
clock_t begin, end;
double cost;
begin = clock();
fscanf(fin,"%d %d",&a,&b);
if((b-a)>500000)
num=prime1(pnum,a,b);
else{
num=prime2(pnum,a,b);
start=0;
}
for (i = start; i < num ; i++){
if(pnum[i]>=a)
if(ispal(pnum[i]))
fprintf(fout,"%d\n",pnum[i]);
}
end = clock();
cost = (double)(end - begin) / CLOCKS_PER_SEC;
printf("%lf seconds\n", cost);
return 0;
}
int main(int argc, const char *argv[])
{
int i;
for(i=2;i<100;i++)
printf("%d sayisi %s\n",i,prime2(i) ? "asaldir.":"asal degildir.");
return 0;
}
