forked from rosh/MQL5Book
38 lines
1.3 KiB
MQL5
38 lines
1.3 KiB
MQL5
//+------------------------------------------------------------------+
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//| ArraySize.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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#define PRT(A) Print(#A, "=", (A))
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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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int dynamic[];
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int fixed[][4] = {{1, 2, 3, 4}, {5, 6, 7, 8}};
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PRT(sizeof(fixed) / sizeof(int)); // 8
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PRT(ArraySize(fixed)); // 8
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ArrayResize(dynamic, 10);
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PRT(sizeof(dynamic) / sizeof(int)); // 13 (incorrect, sizeof inapplicable)
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PRT(ArraySize(dynamic)); // 10
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PRT(ArrayRange(fixed, 0)); // 2
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PRT(ArrayRange(fixed, 1)); // 4
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PRT(ArrayRange(dynamic, 0)); // 10
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PRT(ArrayRange(dynamic, 1)); // 0
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int size = 1;
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for(int i = 0; i < 2; ++i)
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{
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size *= ArrayRange(fixed, i);
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}
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PRT(size == ArraySize(fixed)); // true
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}
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//+------------------------------------------------------------------+
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