#include <iostream>
#include <string>

using namespace std;

int main()
{
	string name;
	cout << "Enter your name" << endl;
	cin >> name;

	cout << "Hello, " << name << endl;

	if (name == "John")
	{
		cout << name << ", I know your name!" << endl;
	}


	cout << "Your name is " << name.length() << " characters long" << endl; //return length of the string

	cout << name[name.find('o') + 1] << endl; // name.find(..) returns pointer
	cout << name.substr(name.find('o') + 1) << endl; //substring starting from the letter just after 'o'
	cout << name[1] << endl; //return particular letter of the string 
	system("pause");
	return 0;
}