求編程高手幫忙寫個四則運算加減法的程序

typedef int (WINAPI ICEPUB_BIGINTEGERADDITION)(char *str1,char *str2,char *strResult);

ICEPUB_BIGINTEGERADDITION *icePub_bigIntegerAddition = 0;

HINSTANCE hDLLDrv = LoadLibrary("icePubDll.dll");

if(hDLLDrv)

{

icePub_bigIntegerAddition = (ICEPUB_BIGINTEGERADDITION *)GetProcAddress(hDLLDrv, "icePub_bigIntegerAddition");

}

if(icePub_bigIntegerAddition != NULL)

{

icePub_bigIntegerAddition("11111111111111111111111","22222222222222222222",strResult);

}

if(hDLLDrv)

FreeLibrary(hDLLDrv);

AfxMessageBox(strResult);

char strResult[1024];

typedef int (WINAPI ICEPUB_BIGINTEGERSUBTRACTION)(char *str1,char *str2,char *strResult);

ICEPUB_BIGINTEGERSUBTRACTION *icePub_bigIntegerSubtraction = 0;

HINSTANCE hDLLDrv = LoadLibrary("icePubDll.dll");

if(hDLLDrv)

{

icePub_bigIntegerSubtraction = (ICEPUB_BIGINTEGERSUBTRACTION *)GetProcAddress(hDLLDrv, "icePub_bigIntegerSubtraction");

}

if(icePub_bigIntegerSubtraction != NULL)

{

icePub_bigIntegerSubtraction("11111111111111111111111","22222222222222222222",strResult);

}

if(hDLLDrv)

FreeLibrary(hDLLDrv);

AfxMessageBox(strResult);

支持1024位10進制運算