Compilare: user.c: In function ‘main’: user.c:12:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d" , &n,&s); ^ user.c:15:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d" , &v[i]); ^ user.c:38:16: warning: ‘a6’ may be used uninitialized in this function [-Wmaybe-uninitialized] fprintf(fout, "%d %d %d %d %d %d" ,v[a1],v[a2],v[a3],v[a4],v[a5],v[a6] ); ^ user.c:38:16: warning: ‘a5’ may be used uninitialized in this function [-Wmaybe-uninitialized]