一维Riemann问题，即激波管问题，是一个典型的一维可压缩无黏气体动力学问题，并有 解析解。对它采用二阶精度MacCormack两步差分格式进行数值求解。同时，为了初学者入门和练习方便,这里给出了用 语言和 编写的计算一维Riemann问题的计算程序，供大家学习参考。-The one-dimensional Riemann problem, namely the shock tube problem is a typical one-dimensional compressible inviscid gas dynamics, and analytical solutions. It solved numerically using second-order accuracy MacCormack two-step difference scheme. Convenient for beginner and exercises given here to the calculation procedure of the one-dimensional Riemann problem with the calculation of language and writing, for all to learn.