faq the c++ will not provide the default constructor?

[fcvcnet]

Hi,
If we do not provide the default constructor(non-parameter constructor),
the compiler will create one for us.
If we have a constructor with parameter and we do not provide the
non-parameter constructor, wether the compiler create default constructor
for us?
Thank you very much.

 

[Ian Collins]

Hi,
If we do not provide the default constructor(non-parameter constructor),
the compiler will create one for us.
If we have a constructor with parameter and we do not provide the
non-parameter constructor, wether the compiler create default constructor
for us?

No, you have to provide one.

 

[fcvcnet]

Thank you very much.

No, you have to provide one.

 

[dan2online]

Hi,
If we do not provide the default constructor(non-parameter constructor),
the compiler will create one for us.
If we have a constructor with parameter and we do not provide the
non-parameter constructor, wether the compiler create default constructor
for us?

If a constructor has parameters, all the parameters have default
values. The constructor aslo is default. Otherwise, you need to provide
no-parameter constructor as default.

 

[fcvcnet]

Thank you dan2online.

If a constructor has parameters, all the parameters have default values.

Is it I must provide the default values?

The constructor aslo is default.

Is it be take as the "only one" default ctor(The word I learned just hours
ago)?

Thank you.