99. Constructors-I

Question.4

A driver class has a single-argument constructor:

class UARTDriver {
public:
   UARTDriver(int baud) { /* setup */ }
};

void configure(UARTDriver drv) { /* ... */ }

configure(9600);  // Pass int where UARTDriver expected

Does configure(9600) compile?

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No -- type mismatch between int and UARTDriver
Yes -- the compiler implicitly creates a temporary UARTDriver(9600) from the int argument
Yes -- but only with C++17
No -- functions cannot accept class objects

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