从用c语言编出程序要用文件输入数据。 绘制二次B样条曲线的表达式： P(0,2)(t)=P0*G(0,2)(t)+P1*G(1,2)(t)+P2*G(2,2)(t) 0<=t<=1-from using language out to document procedures with the input data. Drawing II B-spline curves of expression : P (0,2) (t) = P0 * G (0,2) (t) * G P1 (1,2) (t) * P2 G (2,2) (t ) 0lt; = TLT; = 1