验证指针本质是一个占四个字节的东西,这个东西代表的是变量的地址，并可以通过四个字符保存下来(除函数指针):

将整型，字符型，结构体型数据的地址保存到一个字符数组中，每个地址都只占4个字节。然后从数组中每次取四个，转换成指针，再通过该指针找到原先存的数据。-Verify pointer essence is a total of four bytes of the things this thing represents the address of a variable, and can be preserved through the four characters (except function pointers): will be integer, character, structure, size of the address of the data saved to the an array of characters, each addresses only 4 bytes. And then taking four each from the array, converted into a pointer, and then through the pointer to find the original save data.