Compilare: user.cpp: In function ‘int main()’: user.cpp:45:24: warning: unused variable ‘dir’ [-Wunused-variable] int v, e, i, j, k, dir, newi, newj, now, t, ant; ^ user.cpp:45:29: warning: unused variable ‘newi’ [-Wunused-variable] int v, e, i, j, k, dir, newi, newj, now, t, ant; ^ user.cpp:45:35: warning: unused variable ‘newj’ [-Wunused-variable] int v, e, i, j, k, dir, newi, newj, now, t, ant; ^ user.cpp:43:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("gheizere.in", "r", stdin); ^ user.cpp:44:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("gheizere.out", "w", stdout); ^ user.cpp:47:44: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d%d", &n, &m, &p, &v, &e); ^ user.cpp: In member function ‘void GAY::read()’: user.cpp:17:48: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d%d", &x, &y, &r, &t, &d); ^