Programming

Guidelines to Using Variables

The same guidelines that apply to MATLAB variables at the command line also apply to variables in M-files:

• You do not need to type or declare variables used in M-files (with the possible exception of designating them as global or persistent).
• Before assigning one variable to another, you must be sure that the variable on the right-hand side of the assignment has a value.
• Any operation that assigns a value to a variable creates the variable, if needed, or overwrites its current value, if it already exists.

Naming Variables

Scope of a Variable

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