You can use a variable to declare the size of an array.

Name: You can use a variable to declare the size of an array.
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In many programming languages, especially statically typed ones like C, the size of an array must be a compile-time constant, and cannot be assigned dynamically using a variable at runtime. However, for dynamic types or in languages that support dynamic arrays or lists, sizes can be adjusted at runtime, but this does not change the initial declaration requirement.

You Can Use a Variable to Declare the Size of an Array