Compilare: user.c: In function ‘Delete’: user.c:93:56: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(ptr -> occurences > 1 || ptr -> occurences == 1 && vertices){ ^ user.c: In function ‘main’: user.c:128:8: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("trie.in", "r", stdin); ^ user.c:129:8: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("trie.out", "w", stdout); ^ user.c:138:14: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &task); ^ user.c:140:10: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s", word); ^