strcpy function

char * strcpy( char *strDest, const char *strSrc )

{

　assert((strDest != NULL) && (strSrc != NULL) ); // judge if the two arrays empty

　char*address = strDest;                                    // record the address

　while((*strDest++ = * strSrc++) != ‘/0’ );// key code

　　returnaddress;                                          // return the target array head address

}