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Saturday, 18 May 2013

memcpy() in c++ Reference


memcpy() in c++ Reference

memcpy() is used to transfer a bulk data [Block of data or memory block ]means a number of bytes in to another location , We can use this function in both windows and linux to copy memory locations .

Syntax :  memcpy ( Destination,Source,Sizeof memory block );


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

struct {
  char Address[40];
  int count;
}obj,obj1;

int main ()
{
  char maddress[] = "Johnson";

  /* using memcpy to copy string: */
  memcpy ( obj.Address, maddress, strlen(maddress)+1 );
  obj.count= 4;

  /* using memcpy to copy structure: */
  memcpy ( &obj1, &obj, sizeof(obj) );

  printf ("copied" );

  return 0;
}

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