View Compilation Error

0_0_28148473_30942.cpp: In function 'int main()':
0_0_28148473_30942.cpp:12:17: error: 'scanf_s' was not declared in this scope
  scanf_s("%d",&n);
                 ^
0_0_28148473_30942.cpp:30:2: error: expected ';' before 'for'
  for (int i=2; i<=n; i++)
  ^
0_0_28148473_30942.cpp:30:16: error: 'i' was not declared in this scope
  for (int i=2; i<=n; i++)
                ^