forked from rosh/MQL5Book
38 lines
1.5 KiB
MQL5
38 lines
1.5 KiB
MQL5
//+------------------------------------------------------------------+
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//| GoodTimes.mq5 |
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//| Copyright 2021, MetaQuotes Ltd. |
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//| https://www.mql5.com |
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//+------------------------------------------------------------------+
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#property copyright "Copyright 2021, MetaQuotes Ltd."
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#property link "https://www.mql5.com"
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#property version "1.00"
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//+------------------------------------------------------------------+
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//| Return new greeting on every call |
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//+------------------------------------------------------------------+
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string Greeting()
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{
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static int counter = 0;
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static const string messages[3] =
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{
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"Good morning", "Good day", "Good evening"
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};
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// error demo: 'messages' - constant cannot be modified
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// messages[0] = "Good night";
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return messages[counter++ % 3];
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}
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//+------------------------------------------------------------------+
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//| Script program start function |
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//+------------------------------------------------------------------+
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void OnStart()
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{
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Print(Greeting(), ", ", Symbol());
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Print(Greeting(), ", ", Symbol());
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Print(Greeting(), ", ", Symbol());
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// Print(counter); // error: 'counter' - undeclared identifier
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}
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//+------------------------------------------------------------------+
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