Compilare: user.cpp: In function ‘int func(std::string)’: user.cpp:115:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( i = 0; i < word.size(); i++ ) { ^ user.cpp: In function ‘int main()’: user.cpp:159:6: warning: unused variable ‘count’ [-Wunused-variable] int count = 0; ^ user.cpp:161:6: warning: unused variable ‘i’ [-Wunused-variable] int i; ^