c++ - Hello, i need to figure out how to change coordinates. not a GUI -


i using microsoft visual c++ express 2010 have variables: int x, represents position of video game character. (their y of course) program loops , each time changes x couple of places. must within 0-800. , when reaches 0 (which supposed edge of screen) rewinds.

i have figured out how change value every time program runs, how make sure keeps value in 0-800 range, , rewind when reaches position 0? , has own function outside of main entirely. thank you.

x = (x + 800) % 800;

this keep x within (0..799). if need (0..800), replace 800 801.


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