> or c) go through the incredibly complex calculations to determine the
> temperature from the resistance.

This depends on how accurate you need the temperature. Unless you are
operating at extreme temperatures, you can probably linearise the sensor
enough using a pre-calculated table read, especially if your temperature
range is within what an LM35 will handle.

Use something like Excel to generate the table, and if you do it correctly,
Excel can be persuaded to generate the table source code for you.

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