Compilare: user.c:6:5: warning: built-in function ‘log’ declared as non-function [enabled by default] int log[170][C+1],rez[C+1],aux[1001],s[C+1]; ^ user.c: In function ‘add’: user.c:20:11: warning: variable ‘o’ set but not used [-Wunused-but-set-variable] int i,o=0; ^ user.c: In function ‘main’: user.c:42:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("indep.in","r",stdin); ^ user.c:43:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("indep.out","w",stdout); ^ user.c:58:10: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.c:61:14: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&x); ^