Compilare: user.c: In function ‘main’: user.c:10:7: warning: unused variable ‘i’ [-Wunused-variable] int i = -1; /* EDIT have i start at -1 :) */ ^ user.c:18:10: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf (fp, "%d\n", &value); ^ user.c:19:10: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf (fp, "%d", &value2); ^