Compilare: user.cpp: In function ‘int main()’: user.cpp:49:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] int T; scanf("%d", &T); ^ user.cpp:54:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &N); ^ user.cpp:60:44: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d", &node, &child, &position); ^ user.cpp:73:36: warning: ‘root’ may be used uninitialized in this function [-Wmaybe-uninitialized] generateCode(tree, root, codes[k]); ^