In article ,
  wrote:
>Hello Group Members,
>
>I am a new user/programmer for the Raspberry Pi.
>I have found a pwm program in python that dims and brights
>an led. I have also found a program in C that does the
>same thing - when run as sudo.
>
>When I exit the C program, the led stays lit.
>I have a program in python that clears up the bus using GPIO.cleanup()
>
>This works fine, and turns the led off, etc.
>
>I am trying to write/find an equivalent program in C that
>will cleanup the gpio the same way.
>
>Any tips or links will help

Which C library are you using?

If it's wiringPi, then simply change the pin mode to input before
your program ends.

-Gordon

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