Eroare de compilare: user.c:8: error: expected specifier-qualifier-list before ‘nod’ user.c:12: error: expected ‘;’, ‘,’ or ‘)’ before ‘&’ token user.c: In function ‘citire’: user.c:30: warning: implicit declaration of function ‘add’ user.c:23: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result user.c:24: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result user.c:29: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result user.c: In function ‘DFS’: user.c:39: error: ‘struct nod’ has no member named ‘a’