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memmove

Header File

mem.h, string.h

Category

Memory and String Manipulation Routines

Prototype

void *memmove(void *dest, const void *src, size_t n);

Description

Copies a block of n bytes.

memmove copies a block of n bytes from src to dest. Even when the source and destination blocks overlap, bytes in the overlapping locations are copied correctly.

Return Value

memmove returns dest.

Example

Copy Code

    #include <string.h>
    #include <stdio.h>
    int main(void)
    {
      char *dest = "abcdefghijklmnopqrstuvwxyz0123456789";
      char *src = "******************************";
      printf("destination prior to memmove: %s\n", dest);
      memmove(dest, src, 26);
      printf("destination after memmove:    %s\n", dest);
      return 0;
    }

Portability

| POSIX | Win32 | ANSI C | ANSI C++
memmove | + | + | + | +
_fmemmove |  |  |  |

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