すいません、VB４しかやってないんです、VBAはやったけど（ぼそ）

; Filename: MasmHoge.ASM
.386
.MODEL flat, C
.CODE

MasmHoge PROC uses esi, arraychar:PTR

   mov esi, arraychar ; Load ESI with the address of the char array.

   mov BYTE PTR [esi], "H"      ; Since a char is 1 byte long, each
   mov BYTE PTR [esi+1], "e"    ; successive element can be accessed
   mov BYTE PTR [esi+2], "l"    ; by adding 1 more to esi.
   mov BYTE PTR [esi+3], "l"    ; by adding 1 more to esi.
   mov BYTE PTR [esi+4], "o"    ; by adding 1 more to esi.
   mov BYTE PTR [esi+5], " "    ; by adding 1 more to esi.
   mov BYTE PTR [esi+6], "W"    ; by adding 1 more to esi.
   mov BYTE PTR [esi+7], "o"    ; by adding 1 more to esi.
   mov BYTE PTR [esi+8], "r"    ; by adding 1 more to esi.
   mov BYTE PTR [esi+9], "d"    ; by adding 1 more to esi.
   mov BYTE PTR [esi+10], "!"    ; by adding 1 more to esi.

   ret

MasmHoge ENDP
END

#include "stdafx.h"
/* Filename: CMAIN.C */ 

#include <stdio.h>

#ifdef __cplusplus
extern "C" {
#endif

void MasmHoge (char *);

#ifdef __cplusplus
}
#endif

char chararray[11] = "abc";

int _tmain(int argc, _TCHAR* argv[])
{
   printf ("%s\n", chararray);
   MasmHoge (chararray);
   printf ("%s\n", chararray);
}

#include "stdafx.h"
#include <iostream>

int _tmain(int argc, _TCHAR* argv[])
{
	
	int dwValue;
	dwValue = 5;

	__asm
   {
      mov eax, dwValue
      add eax, 100
      mov dwValue, eax
   }

	// 結果出力
	std::cout << dwValue;

	// DOSプロンプトが消えないように入力待ちにする
	std::cin >>  dwValue;
	return 0;
}