copy a string
#include <string.h>
char *strcpy( char *dst, const char *src );
char __far *_fstrcpy( char __far *dst,
                      const char __far *src );
The strcpy() and _fstrcpy() functions copy the string pointed to by src (including the terminating null character) into the array pointed to by dst.
The _fstrcpy() function is a data-model-independent form of the strcpy() function. It accepts far pointer arguments, and returns a far pointer. It is most useful in mixed memory model applications.
the value of dst
#include <stdio.h>
#include <string.h>
void main()
  {
    char buffer[80];
    strcpy( buffer, "Hello " );
    strcat( buffer, "world" );
    printf( "%s\n", buffer );
  }
produces the output:
Hello world