Compilare: user.c: In function ‘main’: user.c:11:19: warning: unused variable ‘nr’ [-Wunused-variable] int n, k, vf, nr, i; ^ user.c:10:10: warning: unused variable ‘ch’ [-Wunused-variable] char ch; ^ user.c:13:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d\n", &n, &k); ^ user.c:14:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%s", 1+v); ^