156. Polymorphism-i

Question.5

A developer iterates over different sensor types using a base pointer array:

ISensor* sensors[] = { &temp, &pressure, &humidity };

for (auto* s : sensors) {
   int val = s->read();  // Calls the right read() for each
   log(val);
}

What makes this work?

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Function overloading — each sensor type has a different read()
Runtime polymorphism — virtual dispatch calls the correct read() implementation for each object's actual type through the base pointer
Template specialization
The compiler inlines all three read() functions

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