Max_W · 发布于 2023-07-21 · 浏览 597 回复 0

int a=2;
while (x%a!=0)
a++;
if (a==x)
return true;
else
return false;

int a;
cin>>a;
if (number (a)==1)
cout<<"1";
else
cout<<"-1";
return 0;