Compilare: user.cpp: In function ‘int main()’: user.cpp:50:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j = 0 ; j <s.size() ; j++) ^ user.cpp:86:31: warning: ‘c2’ may be used uninitialized in this function [-Wmaybe-uninitialized] out<<sol<<" "<<c1<<" "<<c2; ^ user.cpp:86:20: warning: ‘c1’ may be used uninitialized in this function [-Wmaybe-uninitialized] out<<sol<<" "<<c1<<" "<<c2; ^