LDPC目前用的最多、性能最好的译码算法为BP译码算法，本程序用C语言对BP译码算法进行了实现，为了方便初学者，本文还附带了两篇关于BP算法的论文。-LDPC is currently the most used, the best performance of the decoding algorithm for BP decoding algorithm, this procedure using C language on the BP decoding algorithm is impl