一、这篇讲的很通透明白,https://blog.csdn.net/xierhacker/article/details/52516742 二、这篇讲的很全面,https://wenku.baidu.com/view/0310cf1c53ea551810a6f524ccbff121dd36c570.html 三、函数指针,https://www.cnblogs.com/zrtqsk/p/4254765.html 四、比较详细,https://blog.csdn.net/shenwanjiang111/article/details/53007520