forked from rosh/MQL5Book
38 lines
1.3 KiB
MQL5
38 lines
1.3 KiB
MQL5
 | //+------------------------------------------------------------------+
| ||
//| ArraySize.mq5 |
| |||
//| Copyright 2021, MetaQuotes Ltd. |
| |||
//| https://www.mql5.com |
| |||
//+------------------------------------------------------------------+
| |||
| |||
#define PRT(A) Print(#A, "=", (A))
| |||
| |||
//+------------------------------------------------------------------+
| |||
//| Script program start function |
| |||
//+------------------------------------------------------------------+
| |||
void OnStart()
| |||
{
| |||
int dynamic[];
| |||
int fixed[][4] = {{1, 2, 3, 4}, {5, 6, 7, 8}};
| |||
| |||
PRT(sizeof(fixed) / sizeof(int)); // 8
| |||
PRT(ArraySize(fixed)); // 8
| |||
| |||
ArrayResize(dynamic, 10);
| |||
| |||
PRT(sizeof(dynamic) / sizeof(int)); // 13 (incorrect, sizeof inapplicable)
| |||
PRT(ArraySize(dynamic)); // 10
| |||
| |||
PRT(ArrayRange(fixed, 0)); // 2
| |||
PRT(ArrayRange(fixed, 1)); // 4
| |||
| |||
PRT(ArrayRange(dynamic, 0)); // 10
| |||
PRT(ArrayRange(dynamic, 1)); // 0
| |||
| |||
int size = 1;
| |||
for(int i = 0; i < 2; ++i)
| |||
{
| |||
size *= ArrayRange(fixed, i);
| |||
}
| |||
PRT(size == ArraySize(fixed)); // true
| |||
}
| |||
//+------------------------------------------------------------------+
|