Eroare de compilare: user.cpp:5:8: error: expected constructor, destructor, or type conversion before ‘(’ token freopen("disjoint.in", "r", stdin); ^ user.cpp:6:8: error: expected constructor, destructor, or type conversion before ‘(’ token freopen("disjoint.out", "w", stdout); ^ user.cpp: In function ‘int main()’: user.cpp:47:36: error: ‘fout’ was not declared in this scope if (root(x) ^ root(y)) fout << "NU\n"; ^ user.cpp:49:18: error: ‘fout’ was not declared in this scope else fout << "DA\n"; ^ user.cpp:35:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &n, &m); ^ user.cpp:39:40: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d", &cod, &x, &y); ^