Write integer arguments as a binary tree to the standard output.
$ make && make install
$ echo 7 3 2 9 10 4 5 1 8 6 | btecho
|- 7
|- 9
| |- 10
| |- 8
|- 3
|- 4
| |- 5
| |- 6
|- 2
|- 1
$ seq 5 | gshuf | tee /dev/tty | btecho
3
4
1
2
5
|- 3
|- 4
| |- 5
|- 1
|- 2