Compilare: user.cpp: In function ‘int main()’: user.cpp:30:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=1;i<s.size();i++) ^ user.cpp:18:13: warning: unused variable ‘c’ [-Wunused-variable] int a,b,c,d,i,sot,sotie,amant,amanta,total=0,aux=-5; ^ user.cpp:18:15: warning: unused variable ‘d’ [-Wunused-variable] int a,b,c,d,i,sot,sotie,amant,amanta,total=0,aux=-5; ^