How do I read this code line?

[wwcase]

I am wondering how you read this line of code:
for(const char*c = inputLetters.c_str();*c; ++c)
I understand the inputLetters.c_str() and the ++C, but what does const char*c mean and the *c?
thank you.

char inLetters;
	string inputLetters;
	inLetters = 0;
	int loopCount=1;
	int letterCount=0;


												// Read Input Data
	cout << "Enter a word for the corresponding print out of" << endl << "  Civil Aviation Organization Alphabet." << endl; 
	cin>>inputLetters;
	cout<< "The International Civil Aviation Code words for the letters you input are: " << endl;

	for(const char*c = inputLetters.c_str();*c; ++c)
	{
		
	if(loopCount<=26)
		letterCount++;
	loopCount++;

[LB]

It is a poorly formed loop, as it will not always iterate over all characters in the string. If the string contains a null character (yes, std::string supports holding strings with null characters), then the loop will stop early.