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Go PointerA pointer is a variable that stores the address of another variable. The general form of a pointer variable declaration is: A newly declared pointer which has not been assigned to a variable has the nil value. The address-of operator &, when placed before a variable gives us the memory address of the variable. With pointers, we can pass a reference to a variable (for example, as a parameter to a function), instead of passing a copy of the variable which can reduce memory usage and increase efficiency. Go Pointer Example 1Output: x = 0 Go Pointer Example 2Output: Before change ptr 0 After change ptr 10
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