brace indexing is not supported for variables of this type. char array in matlab

main.m
        Here's an example of how to access the third character in a character array called `myString`:

        ```
        myString = 'hello';
        thirdChar = myString(3);
        ```

        In this example, `thirdChar` will be assigned the value `'l'`.

        If you need to access a range of characters within the array, you can use regular indexing with a colon operator. For example:

        ```
        myString = 'hello';
        subString = myString(2:4);
        ```

        In this example, `subString` will be assigned the value `'ell'`.
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