Compilare: user.c: In function ‘main’: user.c:64:32: warning: unused variable ‘dy’ [-Wunused-variable] int t, i, j, n, x, y, z, dx, dy; ^ user.c:64:28: warning: unused variable ‘dx’ [-Wunused-variable] int t, i, j, n, x, y, z, dx, dy; ^ user.c:65:9: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &t); ^ user.c:67:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &n); ^ user.c:69:13: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &v[j]); ^