Compilare: user.cpp: In function ‘int main()’: user.cpp:36:17: warning: unused variable ‘ak’ [-Wunused-variable] int ak = 57; ^ user.cpp:30:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &n, &L); ^ user.cpp:33:81: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lf %lf %lf %lf %d", &V[i].a, &V[i].b, &V[i].k, &V[i].q, &V[i].v); ^