RACHIT AND NIGHT TUITION

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Rachit lives on the coordinate axis OX at x=a. He has his night tuition classes at x=b. On the axis at point x=c, a road light is placed which has it's radius of coverage as r i.e. from x=c, at a distance less than or equal to r, he will have light on his path, otherwise he has to walk in dark. Print the distance (the total coordinate points) during which Rachit will walk in dark while going fr

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solution.cppC++17

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