Need Help understanding CCS Example (EX_WAKUP.C)

[haxan7]

First line of interrupt function ext_isr declares a static variable and sets it false. So every time there is an external interrupt the function get called and every time button_pressed is false. How do the if conditions work if the variable is reinitialized everytime.
Can someone please explain to me how this code works?

Here is EX_WAKUP.C for your convenience.

[PCM programmer]

You need to learn the C languange. It's initialized only once.
Go to the Wikipedia article on static variables:
http://en.wikipedia.org/wiki/Static_variable#Example
Look at the sample code in this section and read the comments:

[haxan7]