創建utf-8文件，並且向裏面寫數據,在讀出來

 

	FILE *pf = fopen(("d:\\33.txt"),("wb,ccs=UTF-8"));
	if(pf == NULL)
	{
		return;
	}

	TCHAR cc[10]=_T("中國");
	//_ftprintf(pf, _T("%s\n"), cc);
	int u8Len = ::WideCharToMultiByte(CP_UTF8, NULL, cc, wcslen(cc), NULL, 0, NULL, NULL);
	
	char* szU8 = new char[u8Len + 1];
	//轉換
	//unicode版對應的strlen是wcslen
	::WideCharToMultiByte(CP_UTF8, NULL, cc, wcslen(cc), szU8, u8Len, NULL, NULL);
	//最後加上'\0'
	szU8[u8Len] = '\0';

	fprintf(pf, ("%s\r\n"),szU8);
	fprintf(pf, ("%s\r\n"),szU8);
	delete szU8;
	fclose(pf);

	FILE *pf1 = fopen(("d:\\33.txt"),("r"));

	if (pf1 == NULL)
	{
		return;
	}
	char ch[1024];
	fscanf(pf1, "%s\n", ch);
	int wcsLen = ::MultiByteToWideChar(CP_UTF8, NULL, ch, strlen(ch), NULL, 0);
	//分配空間要給'\0'留個空間，MultiByteToWideChar不會給'\0'空間
	wchar_t* wszString = new wchar_t[wcsLen + 1];
	//轉換
	::MultiByteToWideChar(CP_UTF8, NULL, ch, strlen(ch), wszString, wcsLen);
	//最後加上'\0'
	wszString[wcsLen] = '\0';
	fscanf(pf1, "%s\n", ch);
	wcsLen = ::MultiByteToWideChar(CP_UTF8, NULL, ch, strlen(ch), NULL, 0);
	//分配空間要給'\0'留個空間，MultiByteToWideChar不會給'\0'空間
//	wchar_t* wszString = new wchar_t[wcsLen + 1];
	//轉換
	::MultiByteToWideChar(CP_UTF8, NULL, ch, strlen(ch), wszString, wcsLen);
	//最後加上'\0'
	wszString[wcsLen] = '\0';

	delete []wszString;
	fclose(pf1);