#include<iostream>
#include<cmath>
using namespace std;
int main()
{
long m,n,k,l;
cout<<"請輸入想查找范圍的初始值和結束值"<<endl;
cin>>m>>n;
if(m<2) cout<<"不符合范圍要求"<<endl;
for(m;m<=n;m++)
{double sqrtm=sqrt(double(m));
for(k=2;k<=sqrtm;k++)
if(m%k==0) break;
if(sqrtm<k) {cout<<m<<" ";
l++;
if(l%10==0) cout<<endl;
}
}
cout<<endl;
system("pause");
return 0;
}
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