Difference between revisions of "Pointers"
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m (New page: A pointer is a variable that holds a reference to space in memory. That area of memory can contain anything. Pointers can be used many languages ... RPG, [[COBOL_Point...) |
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| + | <div style="float:right;border:1px solid black;margin:5px;padding:5px;max-width:350px;"> | ||
| + | {|style="width:80%;table-layout:fixed;text-align:left;border:0px solid black;border-collapse:collapse;font-family:courier" | ||
| + | |-yle="background-color:lightgrey;" | ||
| + | !style="border:1px solid black;width:100px;"|Name | ||
| + | !style="border:1px solid black;width:100px;"|Address | ||
| + | !style="border:1px solid black;width:100px;"|Value | ||
| + | |- | ||
| + | |MyVariable | ||
| + | |00 00 00 01 | ||
| + | |B Y E . | ||
| + | |- | ||
| + | | | ||
| + | |00 00 00 05 | ||
| + | |H E L L | ||
| + | |- | ||
| + | | | ||
| + | |00 00 00 09 | ||
| + | |0 . 00 00 | ||
| + | |- | ||
| + | |MyPointer | ||
| + | |00 00 00 0C | ||
| + | |00 00 00 05 | ||
| + | |} | ||
| + | ----- | ||
| + | The valiable MyVariable above is 4 alpha characters and contains the value "BYE." | ||
| + | The variable MyPointer above points to the memory at address 5 and that memory contains the value "HELLO." | ||
| + | </div> | ||
| + | |||
A pointer is a variable that holds a reference to space in memory. That area of memory can contain anything. | A pointer is a variable that holds a reference to space in memory. That area of memory can contain anything. | ||
Latest revision as of 12:40, 25 February 2008
| Name | Address | Value |
|---|---|---|
| MyVariable | 00 00 00 01 | B Y E . |
| 00 00 00 05 | H E L L | |
| 00 00 00 09 | 0 . 00 00 | |
| MyPointer | 00 00 00 0C | 00 00 00 05 |
The valiable MyVariable above is 4 alpha characters and contains the value "BYE." The variable MyPointer above points to the memory at address 5 and that memory contains the value "HELLO."
A pointer is a variable that holds a reference to space in memory. That area of memory can contain anything.
Pointers can be used many languages ... RPG, COBOL, C, even CLP.
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