Given the class below, tell to what value the default constructor initializes the data member. Name this initialization technique and give another way to write the constructor.
```
class A
{
public:
A();
private:
int a;
};
A::A() : a(17)
{
//deliberately empty
}
```
This is a base (or member) initializer list, albeit a short one. The alternate way to initialize in this constructor follows.
```
A::A()
{
a = 17;
}
```
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