Find the difference between & and * from the Go language

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* and the difference between &:

1. & is to take the address symbol, that is, to obtain the address of a variable, such as; &a
2. * is a pointer operator that can indicate that a variable is a pointer type, or a pointer variable points to a storage unit, that is, the value stored by this address.

Verify from Code:

Build a rect type first:

1. & is the address symbol that takes the address of the Rect type Object

2. * You can indicate that a variable is a pointer type (r is a pointer variable):

3.* can also represent the storage unit that the pointer-type variable points to, that is, the value that this address points to

4. View the address of this pointer variable, the basic data type directly print the address

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