Difference between revisions of "GDN:memcpy"
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<source lang="c">void * memcpy (void *restrict to, const void *restrict from, size_t size)</source> | <source lang="c">void * memcpy (void *restrict to, const void *restrict from, size_t size)</source> | ||
| + | |||
| + | ==Example== | ||
| + | |||
| + | <source lang="c"> | ||
| + | struct foo *oldarray, *newarray; | ||
| + | int arraysize; | ||
| + | ... | ||
| + | memcpy (new, old, arraysize * sizeof (struct foo)); | ||
| + | </source> | ||
Revision as of 15:24, 30 October 2013
The memcpy function copies size bytes from the object beginning at from into the object beginning at to. The behavior of this function is undefined if the two arrays to and from overlap; use memmove instead if overlapping is possible.
The value returned by memcpy is the value of to.
Contents
Prototype
<source lang="c">void * memcpy (void *restrict to, const void *restrict from, size_t size)</source>
Example
<source lang="c"> struct foo *oldarray, *newarray;
int arraysize;
...
memcpy (new, old, arraysize * sizeof (struct foo));
</source>
| Header | string.h |
|---|---|
| Supported Since | C90 |
