---

Lỗi biên dịch:

Main.cc:3:8: error: expected constructor, destructor, or type conversion before ‘(’ token
  printf("Nhap so nguyen duong n: ");
        ^
Main.cc:4:7: error: expected constructor, destructor, or type conversion before ‘(’ token
  scanf("%d", &n);
       ^
Main.cc:5:2: error: expected unqualified-id before ‘for’
  for (int i = 0; i < n; i++) {
  ^~~
Main.cc:5:18: error: ‘i’ does not name a type; did you mean ‘pi’?
  for (int i = 0; i < n; i++) {
                  ^
                  pi
Main.cc:5:25: error: ‘i’ does not name a type; did you mean ‘pi’?
  for (int i = 0; i < n; i++) {
                         ^
                         pi
Main.cc:12:2: error: ‘pi’ does not name a type
  pi *= 4;
  ^~
Main.cc:13:8: error: expected constructor, destructor, or type conversion before ‘(’ token
  printf("Gia tri xap xi cua pi la: %.5f", pi);
        ^
Main.cc:14:2: error: expected unqualified-id before ‘return’
  return 0;
  ^~~~~~