69 lines
1.9 KiB
MQL5
69 lines
1.9 KiB
MQL5
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//+------------------------------------------------------------------+
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//| StmtLoopsFor.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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//| Script program start function |
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//+------------------------------------------------------------------+
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void OnStart()
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{
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// simple single variable loop
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int a[] = {1, 2, 3, 4, 5, 6, 7};
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const int n = ArraySize(a);
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for(int i = 0; i < n; ++i)
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a[i] = a[i] * a[i];
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ArrayPrint(a); // 1 4 9 16 25 36 49
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// Print(i); // error: 'i' - undeclared identifier
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// pair of loop variables
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for(int i = 0, j = n - 1; i < n / 2; ++i, --j)
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{
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int temp = a[i];
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a[i] = a[j];
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a[j] = temp;
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}
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ArrayPrint(a); // 49 36 25 16 9 4 1
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// partial loop header
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int k = 0, sum = 0;
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for( ; sum < 100; )
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{
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sum += a[k++];
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}
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Print(k, " ", sum - a[k]); // 3 94
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// nested loops
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int table[10][10] = {0};
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for(int i = 1; i <= 10; ++i)
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{
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for(int j = 1; j <= 10; ++j)
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{
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table[i - 1][j - 1] = i * j;
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}
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}
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ArrayPrint(table);
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// infinite (!) loop, empty header
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for( ; /*!IsStopped()*/; )
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{
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Comment(GetTickCount());
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Sleep(1000);
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// exit upon user request to remove the script
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// 'Abnormal termination' after 3 seconds of graceful timeout
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}
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Comment(""); // never reached till !IsStopped() is commented
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}
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//+------------------------------------------------------------------+
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