Compilare: user.c: In function ‘calc’: user.c:17:23: warning: unused variable ‘patru’ [-Wunused-variable] int unu, doi, trei, patru; ^ user.c:17:17: warning: unused variable ‘trei’ [-Wunused-variable] int unu, doi, trei, patru; ^ user.c: In function ‘main’: user.c:54:9: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &n); ^ user.c:56:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &v[i]); ^ user.c: In function ‘calc’: user.c:25:11: warning: ‘last’ may be used uninitialized in this function [-Wmaybe-uninitialized] prev[a] = last; ^