Compilare: user.cpp: In function ‘void EulerCycle()’: user.cpp:71:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1; i < cycle.size(); i+=2){ ^ user.cpp: In function ‘void Read()’: user.cpp:26:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n, &nrEdge); ^ user.cpp:28:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &u, &v); ^