ArrayResize declaration without type

[Essam Daoud]

This code's error is 'declaration without type', Any idea why and how to fix it? Thanks

input int       days=3;

Session *session[];
ArrayResize(session, days); //<<<< ERROR <<< declaration without type.

[Marco vd Heijden]

You have to specify the datatype of the array.

Is it long, int, double, string, datetime ?

The compiler isn't good at guessing.

[Essam Daoud]

Marco vd Heijden:

You have to specify the datatype of the array.

Is it long, int, double, string, datetime ?

The compiler isn't good at guessing.

Why the docs then does not specify the datatype in their example

https://www.mql5.com/en/docs/array/arrayresize

Can you give the solution for this case in the code please?

Thanks

[Alain Verleyen]

samjesse:

Why the docs then does not specify the datatype in their example

https://www.mql5.com/en/docs/array/arrayresize

Can you give the solution for this case in the code please?

Thanks

ArrayResize() can't be on global scope.

[Essam Daoud]

Alain Verleyen:

ArrayResize() can't be on global scope.

Thank you.

[Keith Watford]

samjesse:

This code's error is 'declaration without type', Any idea why and how to fix it? Thanks

Do not double post. It is annoying and can waste people's time.

I have deleted your other post

[fxsaber]

samjesse:

This code's error is 'declaration without type', Any idea why and how to fix it? Thanks

input int       days=3;

class Session;

Session *session[];
const int Init = ArrayResize(session, days); // OK

[Alain Verleyen]

fxsaber:

Useless.

[fxsaber]

Alain Verleyen:
Useless.

You just do not understand.

[Alain Verleyen]

fxsaber:

You just do not understand.

Of course, I don't understand anything from you. :-)

Are you answering to help people or ... ? Please explain us what can be the usage of using ArrayResize() on the global scope using a "const int" ?

[fxsaber]

Alain Verleyen:

Of course, I don't understand anything from you. :-)

Are you answering to help people or ... ? Please explain us what can be the usage of using ArrayResize() on the global scope using a "const int" ?

Run

input int       days=3;

class Session
{
public:
  Session() { Print(__FUNCSIG__); }
};

Session session[];
const int Init = ArrayResize(session, days); // OK

int OnInit()
{
  Print(__FUNCSIG__);
  
  return(INIT_FAILED);
}

Result

void Session::Session()
void Session::Session()
void Session::Session()
int OnInit()

ArrayResize before OnInit. This is useful, for example, here.