Ошибка с регистрами - Ассемблерные вставки - Assembler

#include"stdafx.h"
#include <iostream>
#include <string>
 
using namespace std;
 
int main()
{
    string C;
    string V;
 
    cout << "Please, enter your string" << endl;
    getline(cin, C);
    cout << endl;
 
    __asm
    {
        mov ax, C
        mov ds, ax
        mov es, ax
        cld //df=0;
        lea si, C
        lea di, V
        mov cx, 16
        rep movs C, V
 
        mov ax, C
        mov ds, ax
        push ds
        pop es
        cld
        mov cx, 16
        lea di, V
        mov al, '.'
 
        m1:
        repne scas V
            jne fin
            dec di
            mov word ptr[V], '  .'
            inc di
            loop m1
            fin :
        }
 
    cout << V << endl;
 
    system("PAUSE");
    return 0;
}

mov ds, ax

rep movs C, V