Compilare: user.c: In function ‘main’: user.c:13:9: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &n); ^ user.c:15:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &v[i]); ^ user.c:16:9: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &t); ^ user.c:43:10: warning: ‘p2’ may be used uninitialized in this function [-Wmaybe-uninitialized] fprintf(out, "%d\n%d %d", max, max2(0, p1 - t), max2(0, p2 - t)); ^ user.c:43:10: warning: ‘p1’ may be used uninitialized in this function [-Wmaybe-uninitialized]