Mã chấm: 13962

Main.c:3:15: error: expected ‘;’, ‘,’ or ‘)’ before ‘&’ token
 void nhap(int &a,int &b,int &c,int &x)
               ^
Main.c: In function ‘main’:
Main.c:17:2: warning: implicit declaration of function ‘nhap’; did you mean ‘nan’? [-Wimplicit-function-declaration]
  nhap(a,b,c,x);
  ^~~~
  nan