---

Lỗi biên dịch:

Main.c:4:15: error: expected ‘;’, ‘,’ or ‘)’ before ‘&’ token
 void nhap(int &n)
               ^
Main.c: In function ‘main’:
Main.c:10:2: warning: implicit declaration of function ‘nhap’; did you mean ‘nan’? [-Wimplicit-function-declaration]
  nhap(a);
  ^~~~
  nan