Why data() appends a NULL character at the end of string? - C++ Programming

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Why data() appends a NULL character at the end of string?

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Why data() appends a NULL character at the end of string? topic posted under C++ Programming which is a part of Programming category in CFanatic Forum

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06-22-2010, 10:46 PM

LarryChen

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Why data() appends a NULL character at the end of string?

As we know member function data() defined by string won't append a NULL character at the end of string. But I found it still appends a NULL character at the end of string. Please check the following code,

Code:

int main() 
{
	string s = "Mike";

	char* q = const_cast<char*>(s.data());

	while(*q)
	{
		q++;
	}

	return 0;
}

Debug this piece of code, you will find out there is a NULL character at the end of string. Why?

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