Compilare: user.c: In function ‘main’: user.c:8:59: warning: variable ‘new’ set but not used [-Wunused-but-set-variable] LL N, S, Pi, i, max = 0, min = 500001, buy, sell, profit, new; ^ user.c:13:7: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(file1, "%lld", &N); ^ user.c:14:7: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(file1, "%lld", &S); ^ user.c:17:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(file1, "%lld", &Pi); ^