#include <iostream>	// C++ Standard Library IO class decls
#include <string>  // C++ string class decls
#include <ctype.h> // decls for isalpha() etc.

using namespace std;

// Example program demonstrating the use of the C++ string class
// and some other functions for examining a string object
int main(int argc, char* argv[] )
{
	string aString;	// an empty string, initially
	aString = "hello";	// populates (or repopulates) the string
	aString += " cs1030";	// concatenates (with +=) to the end
	
	// echo the string back to the console
	cout << "\"" << aString << "\"" << " length is " << aString.length() << endl;

	string searchString("cs");
	// find() searches for the first occurrence of specified searchString within a string
	// The 2nd parameter is the index in the string where the search begins
	int index = aString.find_first_of( searchString , 0 );	// returns the index where the substring was found
	cout << " 1st occurrence " << "\"" << searchString << "\"" << " found at index " << index << endl;
	if( isalpha( aString[index] ) )	// demonstrates indexing into the string; isalpha() is a ctype library function
		cout << "char is alpha: " << aString[index] << endl; // iomanip formatting applies!
	
	// now find next occurrence
	index = aString.find_first_of( searchString , index+1 );	// returns the index where the substring was found
	cout << " 2nd occurrence " << "\"" << searchString << "\"" << " found at index " << index << endl;
	if( isalpha( aString[index] ) )	// demonstrates indexing into the string; isalpha() is a ctype library function
		cout << "char is alpha: " << aString[index] << endl; // iomanip formatting applies!


	return EXIT_SUCCESS;
}