Compilare: main.cpp: In constructor 'Trie::Trie()': main.cpp:11:9: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(int i=0;i<27;i++) ^~~ main.cpp:13:13: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' prefix=0; ^~~~~~ main.cpp: In function 'void ADD(const string&)': main.cpp:24:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0;i<x.size();i++){ ~^~~~~~~~~ main.cpp:30:8: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i == x.size()-1){ ~~^~~~~~~~~~~~~ main.cpp: In function 'void REMOVE(const string&)': main.cpp:38:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<x.size();i++){ ~^~~~~~~~~ main.cpp:44:8: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i == x.size()-1){ ~~^~~~~~~~~~~~~ main.cpp: In function 'int NUMAR(const string&)': main.cpp:52:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<x.size();i++){ ~^~~~~~~~~ main.cpp:57:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i==x.size()-1){ ~^~~~~~~~~~~~ main.cpp: In function 'int PREFIX(const string&)': main.cpp:67:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<x.size();i++){ ~^~~~~~~~~ main.cpp: In function 'int NUMAR(const string&)': main.cpp:62:1: warning: control reaches end of non-void function [-Wreturn-type] } ^