Eroare de compilare: user.c:5: error: expected specifier-qualifier-list before 'nod' user.c: In function 'dfs': user.c:12: error: 'nod' undeclared (first use in this function) user.c:12: error: (Each undeclared identifier is reported only once user.c:12: error: for each function it appears in.) user.c:12: error: 'p' undeclared (first use in this function) user.c:21: error: 'new' undeclared (first use in this function) user.c:21: error: expected ';' before 'nod' user.c: In function 'clad': user.c:29: error: 'nod' undeclared (first use in this function) user.c:29: error: 'p' undeclared (first use in this function) user.c:30: error: 'new' undeclared (first use in this function) user.c:30: error: expected ';' before 'nod' user.c: In function 'main': user.c:52: error: 'struct nod' has no member named 'ua' user.c: At top level: user.c:60: error: redefinition of 'struct nod' user.c:62: error: expected specifier-qualifier-list before 'nod' user.c:68: error: redefinition of 'dfs' user.c:11: error: previous definition of 'dfs' was here user.c: In function 'dfs': user.c:69: error: 'nod' undeclared (first use in this function) user.c:69: error: 'p' undeclared (first use in this function) user.c:78: error: 'new' undeclared (first use in this function) user.c:78: error: expected ';' before 'nod' user.c: At top level: user.c:85: error: redefinition of 'clad' user.c:28: error: previous definition of 'clad' was here user.c: In function 'clad': user.c:86: error: 'nod' undeclared (first use in this function) user.c:86: error: 'p' undeclared (first use in this function) user.c:87: error: 'new' undeclared (first use in this function) user.c:87: error: expected ';' before 'nod' user.c: At top level: user.c:94: error: redefinition of 'main' user.c:37: error: previous definition of 'main' was here user.c: In function 'main': user.c:109: error: 'struct nod' has no member named 'ua'