Thank you for contacting support.
Please note that we always recommend latest version of the API because it includes more features and bug fixes. Support is provided based on latest available version so, we are afraid that, using any older or outdated version may not be a better choice. Aspose APIs no more support 32 bit version so our sincere suggestion would be to use latest 64 bit version in any case.
Moreover, you may convert string to char array as under, where you might search such general inquiries over internet because these forums are specific to Aspose APIs.
string temp = "cat";
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