Compilare: user.cpp: In function ‘void apm(int)’: user.cpp:48:9: warning: unused variable ‘c’ [-Wunused-variable] int c = -1; ^ user.cpp: In function ‘void Erase()’: user.cpp:67:9: warning: unused variable ‘c’ [-Wunused-variable] int c = -1; ^ user.cpp: In function ‘int main()’: user.cpp:98:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0; j<nod.size()-1; j++) ^