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21 lines
1.3 KiB
Markdown
21 lines
1.3 KiB
Markdown
The **VARSEG** function returns an [INTEGER](INTEGER) value that is the segment part of a variable or array memory address.
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## Syntax
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> [DEF SEG](DEF-SEG) = VARSEG(variable_name[(start_index)])
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* If variablename is not defined before [VARPTR](VARPTR) or VARSEG is called, the variable is created and its address is returned.
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* The start index is the lowest index of an array variable when used.
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* When a string variable, VARSEG returns the segment location address of the first byte of the string.
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* Because many QBasic statements change the locations of variables in memory, use the values returned by VARPTR and VARSEG immediately after the functions are used!
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* Integer array sizes are limited to 32767 elements when using [VARSEG](VARSEG) in QB and **QB64**!. Create a larger array using [_BYTE](_BYTE). Example: [DIM](DIM) [SHARED](SHARED) Memory (65535) AS [_UNSIGNED](_UNSIGNED) [_BYTE](_BYTE)
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* **Warning: DEF SEG, VARSEG , VARPTR, PEEK or POKE access QB64's emulated 16 bit conventional memory block!**
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> **It is highly recommended that QB64's [_MEM](_MEM) memory system be used to avoid running out of memory.**
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## See Also
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* [BSAVE](BSAVE), [BLOAD](BLOAD)
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* [SADD](SADD), [DEF SEG](DEF-SEG)
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* [VARPTR](VARPTR), [VARPTR$](VARPTR$)
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* [POKE](POKE), [PEEK](PEEK)
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