Collin Funk dd4e8ae64e manual: fix missing include in sigh1 example. ...

Previously this file would fail to compile with the following error:

    $ gcc manual/examples/sigh1.c
    manual/examples/sigh1.c: In function ‘main’:
    manual/examples/sigh1.c:46:3: error: implicit declaration of function ‘alarm’ [-Wimplicit-function-declaration]
       46 |   alarm (2);
          |   ^~~~~

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>

2025-09-29 17:01:54 -07:00

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