Hey? 8 ? 18YE S？ Na is c 0? M pointer variables are the same as ordinary variables.

Before using it, you should not only define the description,

And must be assigned a specific value. Unassigned pointer

You can't use variables, otherwise the system will be chaotic or even crash.

The assignment of pointer variables can only be given to the address, not to any other data, otherwise an error will occur.