Determine if two rectangles overlap each other?

Question

I am trying to write a C++ program that takes the following inputs from the user to construct rectangles (between 2 and 5): height, width, x-pos, y-pos. All of these rectang

Answer 1

"If you perform subtraction x or y coordinates corresponding to the vertices of the two facing each rectangle, if the results are the same sign, the two rectangle do not overlap axes that" (i am sorry, i am not sure my translation is correct)

Source: http://www.ieev.org/2009/05/kiem-tra-hai-hinh-chu-nhat-chong-nhau.html