# include <stdio.h># include <math.h># define SQ(x)  ((x)*(x))			# define cube(x)	((x)*(x)*(x))#define tol 1.0e-6#define pi  3.1415926void Input11();void Quad11();void Sys11();void Diag11();void Inter11();void Solve();void Out11();void Stress();char inname[12], outname[12];char Title[80];/*[The Lengths of Arrays has been increased by one,first one is not used ]*/int N, L, Last[6], M;   /*[ Global Variables ]*/float  mu, nu;