Eroare de compilare: user.c:17: error: expected ‘;’, ‘,’ or ‘)’ before ‘&’ token user.c: In function ‘elimina’: user.c:51: warning: implicit declaration of function ‘free’ user.c:51: warning: incompatible implicit declaration of built-in function ‘free’ user.c: In function ‘bfs’: user.c:60: warning: implicit declaration of function ‘insereaza’ user.c: In function ‘citire’: user.c:86: warning: implicit declaration of function ‘malloc’ user.c:86: warning: incompatible implicit declaration of built-in function ‘malloc’ user.c:82: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result user.c:85: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result user.c: In function ‘main’: user.c:113: warning: implicit declaration of function ‘system’