Compilare: user.cpp: In function ‘void davaloare(std::string)’: user.cpp:65:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i<s.size()) ^ user.cpp: In function ‘std::vector<TOK> tokenizeaza(std::string)’: user.cpp:79:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i==s.size()) ^ user.cpp: In function ‘void creeazafunctie(std::string)’: user.cpp:151:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i<s.size()) ^ user.cpp: In function ‘int eval(std::string)’: user.cpp:164:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(s[i]!=')'&&i<s.size()) ^ user.cpp:184:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(s[i]!=','&&i<s.size()) ^ user.cpp:200:17: warning: unused variable ‘x’ [-Wunused-variable] int x=P[it.val]; ^ user.cpp:162:9: warning: unused variable ‘poz’ [-Wunused-variable] int poz=0; ^