C language definition appreciated that two pointers

Two pointers Definition Format:
Type * pointer name;
Example: int * P;
two pointer memory for storing an address pointer.

Two examples of pointer assignment:

int *p = &a;
int* *pp = &p;

Note that only the same type of assignment, the assignment can not be of different types;
for example,

char *p = &a;

int* *pp = &p;

Because int occupies 4 bytes, char 1-byte, the length of the two types of data read is not the same.

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Pointer to the address stored in the address led to a pointer type to dig after the end of

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