Compilare: user.c: In function ‘init_i_buf’: user.c:10:10: warning: ignoring return value of ‘fread’, declared with attribute warn_unused_result [-Wunused-result] fread(i_buf_p = i_buf, sizeof(char), sizeof(i_buf), f); } ^ user.c: In function ‘adv’: user.c:14:14: warning: ignoring return value of ‘fread’, declared with attribute warn_unused_result [-Wunused-result] fread(i_buf_p = i_buf, sizeof(char), sizeof(i_buf), f); } ^