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int Array Issue

  • #1
  • First Post: Edited Mar 1, 2024 2:07am Feb 1, 2024 11:57am | Edited Mar 1, 2024 2:07am
Hi coders, hope you can help.

I fully understand that the contents of an integer Array must be have integer figures inside, no worry.

I intend to have 9 types of TFs and will only need to control on the User Input Variables, any changes on the 9 "int sTF=xx;" by the user will automatically to reflect in the whole EA's TFs, therefore the user will not need to manually change inside the body of the EA's codes.

I would like to write an array that with "representing integer values" inside such as :-

Inserted Code
int TF[9]={sTF1,sTF2,sTF3,sTF4,sTF5,sTF6,sTF7,sTF8,sTF9};

The way I wrote is as follows :-

Inserted Code
   // User Input Variables
   int sTF1=1;
   int sTF2=5;
   int sTF3=15;
   int sTF4=60;
   int sTF5=240;
   int sTF6=1440;
   int sTF7=15;
   int sTF8=30;
   int sTF9=60;
 
   // Inside the body of a function block
   int TF[9]={sTF1,sTF2,sTF3,sTF4,sTF5,sTF6,sTF7,sTF8,sTF9};

Of course, my way of coding will definitely create 9 errors as per attached picture ...

I would like to check with coder is there any coding way to achieve such array mission of using "representing integer values" instead of integer values ? Thanks.
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  • #2
  • Edited 1:54pm Feb 29, 2024 1:43pm | Edited 1:54pm
A coder replied me, has to write below way :-

Inserted Code
   // User Input Variables
   int sTF1=1;
   int sTF2=5;
   int sTF3=15;
   int sTF4=60;
   int sTF5=240;
   int sTF6=1440;
   int sTF7=15;
   int sTF8=30;
   int sTF9=60;
 
   // Inside the body of a function block
   int TF[9];
   TF[0]=sTF1;
   TF[1]=sTF2;
   TF[2]=sTF3;
   TF[3]=sTF4;
   TF[4]=sTF5;
   TF[5]=sTF6;
   TF[6]=sTF7;
   TF[7]=sTF8;
   TF[8]=sTF9;

This method is only suitable for small sized Arrays, but not suitable for bigger sized Arrays.
  • #3
  • Feb 29, 2024 4:02pm Feb 29, 2024 4:02pm
Quoting chimoong
A coder replied me, has to write below way :- // User Input Variables int sTF1=1; int sTF2=5; int sTF3=15; int sTF4=60; int sTF5=240; int sTF6=1440; int sTF7=15; int sTF8=30; int sTF9=60; // Inside the body of a function block int TF[9]; TF[0]=sTF1; TF[1]=sTF2; TF[2]=sTF3; TF[3]=sTF4; TF[4]=sTF5; TF[5]=sTF6; TF[6]=sTF7; TF[7]=sTF8; TF[8]=sTF9; This method is only suitable for small sized Arrays, but not suitable for bigger sized Arrays.
First, you have fixed number of input. His method is correct.
However, if you want to increase input size dynamically, you have to get input as string and parse, convert into int.
MT4/5 doesn't accept input as Array.


//accept use input as strings seperated by comma ,
input string TFs = "0,5,15,360";

//split string and store into string array result[]

string to_split= TFs;
string sep=","; // A separator as a character
ushort u_sep; // The code of the separator character
string result[]; // An array to get strings
//--- Get the separator code
u_sep=StringGetCharacter(sep,0);
//--- Split the string to substrings
int k=StringSplit(to_split,u_sep,result);

Now, you have your input TFs in results[] array as string.

Either you can convert those into Int like StringToInteger(results[0]) directly
or create another Dynamic Array and store those into new array.

//dynamic array
int InputArray[];

for ( int n = 0; n < ArraySize(results[]); n++)
{
//increase arraysize by 1
ArrayResize(InputArray,ArraySize(InputArray)+1);

//store value from results array after converting to int
InputArray[ArraySize(InputArray)-1] = StringToInteger(results[n]);

}
  • #4
  • Last Post: Feb 29, 2024 4:15pm Feb 29, 2024 4:15pm
Quoting BlueRain
{quote} First, you have fixed number of input. His method is correct. However, if you want to increase input size dynamically, you have to get input as string and parse, convert into int. MT4/5 doesn't accept input as Array. //accept use input as strings seperated by comma , input string TFs = "0,5,15,360"; //split string and store into string array result[] string to_split= TFs; string sep=","; // A separator as a character ushort u_sep; // The code of the separator character string result[]; // An array to get strings //--- Get the separator code...
Thanks BlueRain, good input.

Your method is for the case if the user spcifically writes integer values in the array, then it should be okay :-
Inserted Code
int TF[9]={1,5,15,60,240,1440,15,30,60};

However for my case, I would like to write an array that with "representing integer values" inside :-
Inserted Code
int TF[9]={sTF1,sTF2,sTF3,sTF4,sTF5,sTF6,sTF7,sTF8,sTF9};

Therefore, in my opinion, your method cannot work for my case. Anyway, thank you very much for your valuable input.
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