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.
horizontal axis noun [S]. âº the âline of âfigures or âcoordinates that are âarranged from âleft to âright along the âbottom of a âgraph or âmap: The âvertical âaxis ârepresents âvalue; the âhorizontal âaxis ârepresents âtime. See also x-axis Compare vertical axis.