how to add null at the end of wstring?

[bajajv]

Hi,
I want to implement the cstring class using wstring. but in assignement operator, I need to know how to add null while assigning some wchar_t type of data to the wstring. below is my code -

class CString 
{ 
public:
	wstring wStr; 
	CString () {wStr = L"";} 
	CString (wstring str) {wStr = str;} 
	CString& operator =( const CString& stringSrc );
	CString& operator =( wchar_t wcChar );
};
int main()
{
	CString name = L"Vipul Bajaj";
	CString name1 = L"Santosh Patil";

	name1 = name;
	wchar_t aaa = L'Z';
	name1 = aaa;

	return 0; 
}

CString& CString::operator =( const CString& stringSrc )
{
	this->wStr.assign(stringSrc.wStr);
	return *this;
}

CString& CString::operator =( wchar_t wcChar )
{
	this->wStr.assign(&wcChar);
	int iLen = ((int) (sizeof (wcChar))) + 1;  //Will this calculate the       exact                                              size required for both unix and windows
	this->wStr[iLen] = 0;  
	return *this;
}

The second assignment operator is adding null after some garbage value copied into the wstring.

Also, see the code below-

int iLen = ((int) (sizeof (wcChar))) + 1;

Will this calculate the exact size required for both unix and windows?

Thanks,

[weaknessforcats]

Why are you dong this? wstring already implements everything. Your Cstring is a duplication.

Your assignment operator is:

CString& CString::operator =( wchar_t wcChar )
{
this->wStr = wcChar;

return *this;
}

You don't need a length variable. The length is always wStr.size().

[bajajv]

Yes. But when I check in watch window of VS2005, for this code -
name1 = "ABC";
wchar_t aaa = L'Z';
name1 = aaa;
I see name1 as "Z****" - 4 squares after Z.
And when I add null, it shows 3 junk squares.
Thats why, I was in doubt whether it is correct or not?

[weaknessforcats]

Everything looks fine in the Watch window of Visual Studio.NET 2008.