Compilare: user.c: In function ‘main’: user.c:47:12: warning: unused variable ‘j’ [-Wunused-variable] int i, j, timp=1, st =0, ok=0, index=0; ^ user.c:43:5: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d %d", &n, &m); ^ user.c:58:9: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d %d", &nod1, &nod2); ^