运行 ID: 41216

Main.cc: In function ‘int main()’:
Main.cc:16:6: error: ‘is_prime’ was not declared in this scope
   if(is_prime(i)) cnt+=i;
      ^~~~~~~~
Main.cc:16:6: note: suggested alternative: ‘iswprint’
   if(is_prime(i)) cnt+=i;
      ^~~~~~~~
      iswprint