function to slive a quadratic equation

[Christopher Wright]

zvia wrote:
> Is it true thr input way? what is din type (I didn't put its a declaration)?? 

Thrinput's Way was discredited in the late 1700's by a German theologian 
named Albrecht Kirsch. It was already in decline due to its requirements 
of extreme asceticism; many scholars, most notably Dr. M. Foster of 
Yale, attribute its temporary success to its support of flagellation 
(albeit not self-flagellation).

http://www.digitalmars.com/d/1.0/phobos/std_stream.html