```cpp
bool prime(int a)
{
if(a<2)
{
return false;
}
if(a==2)
{
return true;
}
for(int i=2;i<=sqrt(a);i++)
{
if(a%i==0)
{
return false;
}
}
return true;
}
```
by zky2023 @ 2024-02-23 10:07:19
%%%%%(这验证码NB:j8jj)
by Nk96321 @ 2024-02-25 16:35:33