读取文本中的一元二次方程，并输出到目标文本其计算结果。完善出错机制-read quadratic equations from text file.And output the results to another text file. It updated the Exception throwing function.

该程序通过读取的文本中的三维坐标点信息，通过最小二乘和神经网络来进行拟合，得到球的圆心和半径。-The program information through the text to be read in the three-dimensional coordinate point, by the least squares and neural networks to be fitted to obtain the ball center and the radius.