Compilare: user.cpp: In function ‘void Euler(int)’: user.cpp:41:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j=0; j<L[k].size(); j++) ^ user.cpp: In function ‘void Rezolva()’: user.cpp:51:9: warning: unused variable ‘i’ [-Wunused-variable] int i,j; ^ user.cpp:51:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j; ^ user.cpp: In function ‘void Afisare()’: user.cpp:78:14: warning: unused variable ‘j’ [-Wunused-variable] int ok,i,j; ^