#include    <stdio.h>
//#include   <string.h>




char* _strcpy(char* _s, const char* _d);

char sz1[99] = "SONY ",
     sz2[99] = "Pictures 222";

////////////////////////////////////////////////////
int main()
{

    printf("sz1 = %s \n", sz1);

    char *p =_strcpy(sz1, sz2);
    printf("1address p = %d \n ", &p);
    printf("sz1 = %s \n ", p);

return 0;
}


/////////////////////////////////////////////////////////
char* _strcpy(char *s1, const char *s2)
{
    int i = 0;

    char *p = s1;
    printf("2address p = %d \n ", &p);

    while(s2[i])
    {

        s1[i] = s2[i];
        i ++;
    }

     s1[i] = 0;

return p;
}



///////////////////////////////////////////////////////////////////////////////////////////////////////////////////



#include    <stdio.h>
#include   <string.h>


char* _strcpy(char* _s, const char* _d);

char sz1[99] = "SONY ",
     sz2[99] = "Pictures_982143";

////////////////////////////////////////////////////
int main()
{

    char *psz2 = _strcpy(sz1, sz2);

    printf("sz1 = %s \n ", psz2);

return 0;
}


/////////////////////////////////////////////////////////
char* _strcpy(char *_s1, const char *_s2)
{

     __asm  // - - - - - - - - - - - - -
       {                 mov  esi, _s2
                         mov  edi, _s1
                         mov  ebx, _s1
            L_01:        mov   al, [esi]
                         mov [edi], al
                         or    al, 0
                         jz    L_02
                         inc   esi
                         inc   edi
                         jmp   L_01
            L_02:        mov  eax, ebx
       };   // - - - - - - - - - - - - -

}