本程序实现深度学习的卷积神经网络（CNN）算法，含有训练程序和测试程序-This program implements convolution depth learning neural network (CNN) algorithm contains training programs and test procedures

纯C深度学习库，里面包含MNIST手写数字识别数据集，编译就能训练和预测(Pure C depth learning library, which contains MNIST handwritten digital recognition data sets, compiling can be trained and predicted.)