forked from rosh/MQL5Book
54 lines
2.5 KiB
MQL5
54 lines
2.5 KiB
MQL5
 | //+------------------------------------------------------------------+
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//| StringSymbols.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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string numbers = "0123456789";
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PRT(numbers);
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PRT(StringSetCharacter(numbers, 7, 0)); // truncate at 7
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PRT(numbers); // 0123456
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PRT(StringSetCharacter(numbers, StringLen(numbers), '*')); // add '*'
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PRT(numbers); // 0123456*
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PRT(StringGetCharacter(numbers, 5)); // 53 = code of '5'
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PRT(numbers[5]); // 53 as well
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PRT(CharToString(0xA9)); // "©"
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PRT(CharToString(0xE6)); // "æ", "ж", or other glyph
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// depending from Windows locale
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PRT(ShortToString(0x3A3)); // "Σ"
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PRT(ShortToString('Σ')); // "Σ"
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ushort array1[], array2[]; // dynamic arrays
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ushort text[5]; // fixed array
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string alphabet = "ABCDEАБВГД";
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// copy including terminal '0'
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PRT(StringToShortArray(alphabet, array1)); // 11
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ArrayPrint(array1); // 65 66 67 68 69 1040 1041 1042 1043 1044 0
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// copy excluding terminal '0'
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PRT(StringToShortArray(alphabet, array2, 0, StringLen(alphabet))); // 10
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ArrayPrint(array2); // 65 66 67 68 69 1040 1041 1042 1043 1044
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// copy to a fixed size array
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PRT(StringToShortArray(alphabet, text)); // 5
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ArrayPrint(text); // 65 66 67 68 69
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// copy to a position beyond previous array size
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// (elements [11-19] will contain random data)
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PRT(StringToShortArray(alphabet, array2, 20)); // 11
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ArrayPrint(array2);
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/*
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[ 0] 65 66 67 68 69 1040 1041 1042 1043 1044 0 0 0 0 0 14245
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[16] 15102 37754 48617 54228 65 66 67 68 69 1040 1041 1042 1043 1044 0
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*/
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string s = ShortArrayToString(array2, 0, 30);
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PRT(s); // 'ABCDEАБВГД', can have trailing random symbols
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}
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//+------------------------------------------------------------------+
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