## To build:

``` <!---sh-->
    make
```

An alternate version of this program exists. See [Alternate
code](#alternate-code) below.


## To use:

``` <!---sh-->
    ./prog
```


## Try:

``` <!---sh-->
    ./run_clock
    # And watch closely for 15-20 seconds
```


## Alternate code:

An alternate version of this entry, [prog.alt.c](%%REPO_URL%%/2020/endoh3/prog.alt.c), is provided.  This
alternate code uses Unicode letters.


### Alternate build:

``` <!---sh-->
    make alt
    ```


### Alternate use:

Use `prog.alt` as you would `prog` above.


### Alternate try:

``` <!---sh-->
    ./run_clock.alt
    # And watch closely for 15-20 seconds
```


## Judges' remarks:

You may be tempted to use a mirror. Resist the temptation! Try figuring out how
the clock hands are drawn.  Can you change the program to make it draw a
familiar (non-mirrored) clock face? Can you add the second hand?

When using the [run_clock.sh](%%REPO_URL%%/2020/endoh3/run_clock.sh) shell script, your perception of
time might depend on what time it is.


## Author's remarks:

Prepare a mirror!

``` <!---sh-->
    make clock
```

Note: You need to recompile it each run.

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