Compilare: user.c: In function ‘main’: user.c:8:16: warning: unused variable ‘x’ [-Wunused-variable] int n, i, j, x, dr = 1; ^ user.c:9:9: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &n); ^ user.c:11:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &v[i]); ^