刚学数值分析，就碰到了插值。于是用VC编写了这个小程序。功能：绘制原函数、Lagrange插值、三次样条插值函数。移动鼠标就可以查看函数值。Enjoy it!-Just learning numerical analysis, we encountered interpolation. VC was used to prepare this small program. Functions: rendering the original function, Lagrange interpolat