0 Arrays of Pointer-Pointers

We can have arrays of pointers since pointers are variables.

Example use: Sort lines of text of different length.

Note: Text can't be moved or compared in a single operation.

Arrays of Pointers are a data representation that will cope efficiently and conveniently with variable length text lines.

How can we do this: Store lines end-to-end in one big char array n will delimit lines.

Store pointers in a different array where each pointer points to 1st char of each new line.

Compare two lines using strcmp () standard library function.

If 2 lines are out of order swap pointer in pointer array (not text).

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