Constructors with No Arguments

• If you define any constructor, the default constructor is not generated

class counter {

private:

int counter_p;

public:

// We’re defining a constructor explicitly, so there is no

// default constructor

counter() { counter_p = 0; }

void increment() { counter_p++; }

void decrement() { counter_p--; }

void get_value() { return counter_p; }

};

counter a;

a.increment();

cout << a.get_value(); // Prints “1”

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