Compilare: user.cpp: In function ‘void afis(int, int)’: user.cpp:20:17: warning: unused variable ‘c’ [-Wunused-variable] char cc[11],c; ^ user.cpp: In function ‘bool find(int, int)’: user.cpp:47:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v.size();i++) ^ user.cpp: In function ‘int main()’: user.cpp:98:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v.size();i++) ^