counting consecutive null characters

[superbonzo]

taken by a sudden spirit of rebellion I reread the paragraph on for_each and it (implicitly) allows side effects on its functor argument... mah...

therefore the following code should be standard correct

int main()
{
	char data[] = {0, 1, 2, 3, 0, 0, 4 ,5 ,0, 0, 0, 6, 7};

	int count = 0;
	int largest = 0;

    std::for_each( data, data + 13, [&]( char value ) { if( value ) count = 0; else largest = std::max( largest, ++count ); } );
}

a presumably correct alternative with accumulate would be

int main()
{
	char data[] = {0, 1, 2, 3, 0, 0, 4 ,5 ,0, 0, 0, 6, 7};

	struct MyCounter
	{
		MyCounter(): value(0), count(0) {}
		MyCounter( int value, int count ): value(value), count(count) {}

		MyCounter operator+( char a_char )
		{
			if( a_char ) count = 0; else ++count;

			return MyCounter( std::max( value, count ), count );
		}

		int value;
		int count;
	};

    MyCounter	count = std::accumulate( data, data + 13, MyCounter() );
}