有限元稀疏矩阵的保存和提取，基于ANSYS提取稀疏矩阵后在matlab中的重新整理。-Preservation and extraction of finite element sparse matrix

这是有限元方法中的线性插值和二次差值的误差的计算程序。本程序使用C++编程的。当运行出结果还需要在matlab中画出图形。-This is a linear interpolation and the second error of the difference in the finite element method calculation program. The the program use C++ programming. When you run out of the results