Let's consider a code example showing what would be allowed (or not) using different levels of inheritance: 1  class BaseClass {}; void freeStandingFunction(BaseClass* b); class DerivedProtected : protected BaseClass { DerivedProtected() { freeStandingFunction(this); // Allowed } };
Definition of Horizontal Axis. Horizontal means flat or level. Horizontal axis is the x-axis on a graph. The blue number line in the figure below is the x-axis, the horizontal axis.
Define vertical: perpendicular to the plane of the horizon or to a primary axis : upright â vertical in a sentence perpendicular to the plane of the horizon or to a primary axis : upright; located at right angles to the plane of a supporting surfaceâ¦