Compilare: user.c: In function ‘readHeader’: user.c:16:10: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &(h.n), &(h.s)); ^ user.c: In function ‘readNumbers’: user.c:23:14: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d ", &v[i]); ^ user.c: In function ‘printResult’: user.c:78:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.c: In function ‘main’: user.c:86:13: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen ("loto.out","w",stdout); ^ user.c:87:13: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen ("loto.in","r",stdin); ^