Compilare: user.c: In function ‘main’: user.c:63:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d", &n, &m); ^ user.c:65:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d%d", &a[i], &b[i], &z); ^ user.c:101:11: warning: ‘crez’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(crez==rez){ ^