Eroare de compilare: main.cpp: In function 'void ins(Trie*, int)': main.cpp:16:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (pos == s.size()) { ~~~~^~~~~~~~~~~ main.cpp: In function 'int del(Trie*, int)': main.cpp:27:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (pos == s.size()) { ~~~~^~~~~~~~~~~ main.cpp: In function 'int ans(Trie*, int)': main.cpp:43:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (pos == s.size()) { ~~~~^~~~~~~~~~~ main.cpp: In function 'int del(Trie*, int)': main.cpp:51:5: error: redefinition of 'int del(Trie*, int)' int del(Trie *nod, int pos) { ^~~ main.cpp:26:5: note: 'int del(Trie*, int)' previously defined here int del(Trie *nod, int pos) { ^~~ main.cpp:52:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (pos == s.size()) { ~~~~^~~~~~~~~~~ main.cpp:59:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ main.cpp: In function 'int pref(Trie*, int, int)': main.cpp:61:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (pos == s.size() || nod -> fiu[s[pos] - 'a'] == 0) { ~~~~^~~~~~~~~~~ main.cpp: In function 'int del(Trie*, int)': main.cpp:41:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ Non zero exit status: 1