it is possible use function declarators as in C++?

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Hello folks, I cannot figure out how to do in MQL5 the following I can do in C++

// FILE 1. Name: my_include_file.mqh

string get_name();

string get_welcome_message() {
   string name = get_name();
   return StringFormat("Hello %s, welcome to our home!", name);
}

// FILE 2. Name: my_script.mq5

#include <my_custom_includes\my_include_file.mqh>

string get_name() {
   return "Cyberglassed";
}

void OnStart() {
   string welcome_message = get_welcome_message();
}

I always get the error:

'get_name' - function must have a body    my_include_file.mqh    3    8

Am I doing some error or is there is workaround to have the possibility to declare a function like that before arrive to the location where it is implemented?


Thanks, Cyberglassed.

 

You can't do that in mql5.

There are several workaround, for example :

// FILE 1. Name: my_include_file.mqh

string get_name();

string get_welcome_message(string name) {
   string name = get_name();
   return StringFormat("Hello %s, welcome to our home!", name);

and

// FILE 2. Name: my_script.mq5

#include <my_custom_includes\my_include_file.mqh>

string get_name() {
   return "Cyberglassed";
}

void OnStart() {
   string welcome_message = get_welcome_message("Cyberglassed");
}
 

Another workaround, depending of your actual problem :

// FILE 1. Name: my_include_file_1.mq5

string get_name() {
   return "Cyberglassed";
}
// FILE 2. Name: my_include_file_2.mqh

#include <my_custom_includes\my_include_file_1.mqh>

string get_welcome_message() {
   string name = get_name();
   return StringFormat("Hello %s, welcome to our home!", name);
}
// FILE 3. Name: my_script.mq5

#include <my_custom_includes\my_include_file_2.mqh>

void OnStart() {
   string welcome_message = get_welcome_message();
}
 
angevoyageur:

Another workaround, depending of your actual problem :

Thank you very much angevoyageur

it helps me! ;)

 
cyberglassed:

Thank you very much angevoyageur

it helps me! ;)

You are welcome.
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