Compilare: main.cpp: In function 'void ins(Trie*, int)': main.cpp:16:10: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (pos == s.size()) { ~~~~^~~~~~~~~~~ main.cpp: In function 'int del(Trie*, int)': main.cpp:27:10: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (pos == s.size()) { ~~~~^~~~~~~~~~~ main.cpp:30:2: warning: this 'else' clause does not guard... [-Wmisleading-indentation] else ^~~~ main.cpp:35:3: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'else' if (nod -> nr_fii == 0 && nod -> nr_cuvinte == 0 && nod != T) { ^~ main.cpp: In function 'int ans(Trie*, int)': main.cpp:41:10: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (pos == s.size()) { ~~~~^~~~~~~~~~~ main.cpp: In function 'int pref(Trie*, int, int)': main.cpp:49:10: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (pos == s.size() || nod -> fiu[s[pos] - 'a'] == 0) ~~~~^~~~~~~~~~~