How would i make this script in C++ language? Really easy to do, im just stupid?

I want to make a program that when intalled says "onshut down - message pop up "Goodbye". or something in the c language, how would i do this?
Also if an image could pop up instead that would be good if poss.

Answer:
i hope you do a good job. If u need any tips you should go on
google.com
answers.com
or ask.com
maybe you have a pup up blocker you should talk to your computer makers

You'll have better success with this question in the Programming section, not Environment. Good luck.

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How would i make this script in C++ language? Really easy to do, im just stupid?

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