Changing the values ​​of an array after it has been defined

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Hello guys.

Is it possible to change the values ​​of an array after it is defined at the beginning of the program?

for example I have declared an array with default values ​​as follows:

string NewsSymbol[7] = {"USDJPY","EURUSD","USDCHF","NZDUSD","AUDUSD","USDCAD","USDJPY"};

I tried to change all the array values ​​in the program as follows,

if(Condition 1)
   {
   NewsSymbol[7] = {"NZDUSD","EURNZD","GBPNZD","NZDCHF","NZDCAD","NZDJPY","NZDAUD"};
   }
if(Condition 2)
   {
   NewsSymbol[7] = {"AUDUSD","EURAUD","GBPAUD","AUDCHF","AUDCAD","AUDJpy","AUDNZD"};
   }

but I encountered an error. Can you please help me find out what is wrong with my code?


Thanks

Files:
Untitled.png  18 kb
 

That won't work - it is only applicable for initialisation.

You could simply it with a multi dimensional array.

string NewsSymbol[][7] = {
			   {"USDJPY","EURUSD","USDCHF","NZDUSD","AUDUSD","USDCAD","USDJPY"},
                           {"NZDUSD","EURNZD","GBPNZD","NZDCHF","NZDCAD","NZDJPY","NZDAUD"},
                           {"AUDUSD","EURAUD","GBPAUD","AUDCHF","AUDCAD","AUDJPY","AUDNZD"}
                         };
 
Shahriar Soltani:

Hello guys.

Is it possible to change the values ​​of an array after it is defined at the beginning of the program?

for example I have declared an array with default values ​​as follows:

I tried to change all the array values ​​in the program as follows,

but I encountered an error. Can you please help me find out what is wrong with my code?


Thanks

Also, you might want to try using ArrayRemove and then ArrayInitialize to simply rewrite the data.

 
ceejay1962 #:
NewsSymbol

Hello dear ceejay1962 ,

Thank you very much for your good guidance.

Finally it worked. :) 
//+------------------------------------------------------------------+
//|   Variables                                                      |
//+------------------------------------------------------------------+
enum  ENUM_SYMBOL {USD, EUR, GBP , CHF, CAD, JPY , AUD, NZD}  ; 
input ENUM_SYMBOL SYMBOL = USD                                ;
int i  = 0                                                    ;
string charts[7] = {} ;
string NewsSymbol[8][7] = {
            {"EURUSD","GBPUSD","USDCHF","USDCAD","USDJPY","AUDUSD","NZDUSD"},
            {"EURUSD","EURGBP","EURCHF","EURCAD","EURJPY","EURAUD","EURNZD"},
            {"GBPUSD","EURGBP","GBPCHF","GBPCAD","GBPJPY","GBPAUD","GBPNZD"},
            {"USDCHF","EURCHF","GBPCHF","CADCHF","CHFJPY","CHFAUD","CHFNZD"},
            {"USDCAD","EURCAD","GBPCAD","CADCHF","CADJPY","CADAUD","CADNZD"},
            {"USDJPY","EURJPY","GBPJPY","CHFJPY","CADJPY","AUDJPY","NZDJPY"},
            {"AUDUSD","EURAUD","GBPAUD","AUDCHF","AUDCAD","AUDJPY","AUDNZD"},
            {"NZDUSD","EURNZD","GBPNZD","NZDCHF","NZDCAD","NZDJPY","NZDAUD"},
                     };
//+------------------------------------------------------------------+
//| Expert initialization function                                   |
//+------------------------------------------------------------------+
int OnInit()
  {
switch(SYMBOL)
  {
   case USD: i = 0;
   break;   
   case EUR: i = 1;
   break;   
   case GBP: i = 2;
   break;   
   case CHF: i = 3;
   break;   
   case CAD: i = 4;
   break;   
   case JPY: i = 5;
   break;   
   case NZD: i = 6;
   break;   
   case AUD: i = 7;
   break;   
  }
    for(int j=0;j<7;j++)
      {
     charts[j] = NewsSymbol[i][j];
     Print("charts[",j,"] = ",charts[j]);
      }
   return(INIT_SUCCEEDED);
  }
 
Shahriar Soltani #:

Hello dear ceejay1962 ,

Thank you very much for your good guidance.

Finally it worked. :)

Correct Some Mistake :

//+------------------------------------------------------------------+
//|   Variables                                                      |
//+------------------------------------------------------------------+
enum  ENUM_SYMBOL {USD, EUR, GBP , CHF, CAD, JPY , AUD, NZD}  ; 
input ENUM_SYMBOL SYMBOL = USD                                ;
int i  = 0                                                    ;
string charts[7] = {} ;
string NewsSymbol[8][7] = {
            {"EURUSD","GBPUSD","USDCHF","USDCAD","USDJPY","AUDUSD","NZDUSD"},
            {"EURUSD","EURGBP","EURCHF","EURCAD","EURJPY","EURAUD","EURNZD"},
            {"GBPUSD","EURGBP","GBPCHF","GBPCAD","GBPJPY","GBPAUD","GBPNZD"},
            {"USDCHF","EURCHF","GBPCHF","CADCHF","CHFJPY","AUDCHF","NZDCHF"},
            {"USDCAD","EURCAD","GBPCAD","CADCHF","CADJPY","AUDCAD","NZDCAD"},
            {"USDJPY","EURJPY","GBPJPY","CHFJPY","CADJPY","AUDJPY","NZDJPY"},
            {"AUDUSD","EURAUD","GBPAUD","AUDCHF","AUDCAD","AUDJPY","AUDNZD"},
            {"NZDUSD","EURNZD","GBPNZD","NZDCHF","NZDCAD","NZDJPY","AUDNZD"},
                     };
//+------------------------------------------------------------------+
//| Expert initialization function                                   |
//+------------------------------------------------------------------+
int OnInit()
  {
switch(SYMBOL)
  {
   case USD: i = 0;
   break;   
   case EUR: i = 1;
   break;   
   case GBP: i = 2;
   break;   
   case CHF: i = 3;
   break;   
   case CAD: i = 4;
   break;   
   case JPY: i = 5;
   break;   
   case AUD: i = 6;
   break;   
   case NZD: i = 7;
   break;   
 }
    for(int j=0;j<7;j++)
      {
     charts[j] = NewsSymbol[i][j];
     Print("charts[",j,"] = ",charts[j]);
      }
   return(INIT_SUCCEEDED);
  }
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