Compilare: user.c: In function ‘mergesort’: user.c:46:6: warning: type of ‘li’ defaults to ‘int’ [enabled by default] void mergesort(li, middle, ls) { ^ user.c:46:6: warning: type of ‘middle’ defaults to ‘int’ [enabled by default] user.c:46:6: warning: type of ‘ls’ defaults to ‘int’ [enabled by default] user.c: In function ‘read’: user.c:29:13: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen(FIN, "r", stdin); ^ user.c:31:11: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.c:35:15: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &vec[ i ]); ^ user.c: In function ‘divimp’: user.c:107:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.c: In function ‘write’: user.c:113:13: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen(FOUT, "w", stdout); ^