Compilare: user.cpp: In function ‘std::string corectare(std::string, int&)’: user.cpp:18:52: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(s[inc]>='a' && s[inc]<='z' && inc<s.size()) ^ user.cpp: In function ‘void read()’: user.cpp:56:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<s.size();i++) ^ user.cpp: In function ‘int rec(int)’: user.cpp:69:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=act+1;i<v.size();i++) ^