Very simple program needed -source code for mento compile

I need you to develop some software for me. I would like this software to be developed for Linux using C or C++. I need simple program, source code that inwill compile bu myself with GCC in linux. I should enter location to picture jpg. It should go pixel by pixel and add to RGB values value 25to each pixel. Then it should save resoult to RESOULT. Jpg. Thats it. You should also write me how to execute this command. I expect one file in notepad [login to view URL] or something. It should work. You should provide me also a working exe program to be run in linux Porteus distribution. No Wine emulator should be used or similar