一个一维对流扩散问题的数值计算

，对流项采用UDS或CDS差分格式，扩散项采用CDS差分格式-This program solves the one-dimensional convection-diffusion equation with Dirichlet boundary conditionson both ends. The exact solution is compared with solutions obtained using FD method and either UDS

or CDS for convection term, CDS for diffusion term.