C++ reference: cstring: memcpy

memcpy
void * memcpy ( void * dest, const void * src, size_t num );

string.h

cplusplus.com

Copy bytes to buffer from buffer.
Copies num bytes from dest buffer to memory location pointed by src.

Parameters.

dest: Destination buffer where data is copied.
src: Source buffer to copy from.
num: Number of bytes to copy.

Return Value.
dest is returned.

Portability.
Defined in ANSI-C.

Example.

/* memcpy example */
#include <stdio.h>
#include <string.h>

main ()
{
  char str1[]="Sample string";
  char str2[40];
  char str3[40];
  memcpy (str2,str1,strlen(str1)+1);
  memcpy (str3,"copy successful",16);
  printf ("str1: %s\nstr2: %s\nstr3: %s\n",str1,str2,str3);
  return 0;
}

Output:
str1: Sample string str2: Sample string str3: copy successful

See also.
memchr, memcmp, memset, strncpy