#include <iostream>
#include <string>
#include <sstream>

using namespace std;

int main() {

	string input = "";

	// How to get a string/sentence with spaces
	cout << "Please enter a valid sentence (with spaces):\n>";
	getline(cin, input);
	cout << "You entered: " << input << endl << endl;

	// How to get a number.
	int myNumber = 0;

	while (true) {
		cout << "Please enter a valid number: ";
		getline(cin, input);

		// This code converts from string to number safely.
		stringstream myStream(input);
		if (myStream >> myNumber)
			break;
		cout << "Invalid number, please try again" << endl;
	}
	cout << "You entered: " << myNumber << endl << endl;

	// How to get a single char.
	char myChar = { 0 };

	while (true) {
		cout << "Please enter 1 char: ";
		getline(cin, input);

		if (input.length() == 1) {
			myChar = input[0];
			break;
		}

		cout << "Invalid character, please try again" << endl;
	}
	cout << "You entered: " << myChar << endl << endl;

	cout << "All done. And without using the >> operator" << endl;

	return 0;
}

http://www.cplusplus.com/forum/articles/6046/

[C++] Using cin to get user input

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