Compilare: main.cpp: In constructor 'Trie::Trie()': main.cpp:14:9: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(int i=0;i<27;i++) ^~~ main.cpp:16:13: 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(std::__cxx11::string)': main.cpp:27:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0;i<x.size();i++){ ~^~~~~~~~~ main.cpp:33:8: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i == x.size()-1){ ~~^~~~~~~~~~~~~ main.cpp: In function 'void REMOVE(std::__cxx11::string)': main.cpp:41:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<x.size();i++){ ~^~~~~~~~~ main.cpp:47:8: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i == x.size()-1){ ~~^~~~~~~~~~~~~ main.cpp: In function 'int NUMAR(std::__cxx11::string)': main.cpp:55:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<x.size();i++){ ~^~~~~~~~~ main.cpp:60:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i==x.size()-1){ ~^~~~~~~~~~~~ main.cpp: In function 'int PREFIX(std::__cxx11::string)': main.cpp:70:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<x.size();i++){ ~^~~~~~~~~ main.cpp: In function 'int NUMAR(std::__cxx11::string)': main.cpp:65:1: warning: control reaches end of non-void function [-Wreturn-type] } ^