Compilare: user.cpp: In function ‘int Smecherie(int, int)’: user.cpp:22:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<str.size()-1;i++) ^ user.cpp:23:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=1;j<str.size();j++) ^ user.cpp: In function ‘int main()’: user.cpp:38:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<sir.size();i++) ^ user.cpp:39:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=i;j<sir.size();j++) ^