Memcpy () function

Related functions: bcopy (), Memccpy (), Memmove (), Strcpy (), strncpy ()
Header file: # include <string. h>
Define function: void * memcpy (void * DEST, const void * SRC, size_t N)
Function Description: memcpy () is used to copy the first n Bytes of memory content in SRC to the memory address in DeST. Unlike strcpy (), memcpy () completely copies n Bytes and does not end with the string ending '\ 0'.
Return Value: returns the pointer to the DeST.
Additional instructions: The memory areas specified by the SRC and DEST pointers cannot overlap.

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# Include <string. h>
# Include <stdio. h>

Int main ()
{
Char A [30] = "strIng ()";
Char B [30] ="Hi \ 0Zengxiaolong ";
Int I;

Strcpy (A, B); // A [30] ="Hi \ 0ing ()"
Printf ("strcpy ():");
For (I = 0; I <30; I ++)
Printf ("% C", a [I]); //HiIng ()

Memcpy (a, B, 30); // A [30] = "Hi \ 0 zengxiaolong"
Printf ("\ nmemcpy ():");
For (I = 0; I <30; I ++)
Printf ("% C", a [I]); //HiZengxiaolong
Printf ("\ n I = % d \ n", I); // 30

}