Compilare: user.c: In function ‘main’: user.c:13:53: warning: unused variable ‘step’ [-Wunused-variable] long double error = 0.00000001, ox = 0, oy = 0, step = 1; ^ user.c:13:17: warning: unused variable ‘error’ [-Wunused-variable] long double error = 0.00000001, ox = 0, oy = 0, step = 1; ^ user.c:7:37: warning: unused variable ‘aux’ [-Wunused-variable] int dx, dy, cx, cy, k, t, i, q, aux; ^ user.c:15:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%i", &t); ^ user.c:18:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%i", &dx); ^ user.c:19:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%i", &dy); ^ user.c:20:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%i", &k); ^ user.c:21:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%i", &cx); ^ user.c:22:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%i", &cy); ^