标准方程：Y=X2/4p （p值自己定）

曲线以F(0,p)为焦点,曲线以Y轴为对称轴，其X的取值范围是任意的。

实验目的：熟悉C语言图形函数，实现任意数学函数曲线的绘制

-The standard equation: Y = X2/4p (p value itself) curve F (0, p) as the focus curve to the Y-axis as an axis of symmetry, in the range of its X is arbitrary. Purpose of the experiment: familiar with the C language graphics functions, any mathematical function Curve