Compilare: user.cpp: In function ‘int rez(std::string, std::string)’: user.cpp:14:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<min(a.size(),b.size());++i) ^ user.cpp:13:35: warning: unused variable ‘C’ [-Wunused-variable] int potrivire=0,put=1,A=0,B=0,C=0,D=0,Put=1,sf=b.size()-1; ^ user.cpp:13:39: warning: unused variable ‘D’ [-Wunused-variable] int potrivire=0,put=1,A=0,B=0,C=0,D=0,Put=1,sf=b.size()-1; ^ user.cpp:13:43: warning: unused variable ‘Put’ [-Wunused-variable] int potrivire=0,put=1,A=0,B=0,C=0,D=0,Put=1,sf=b.size()-1; ^