#include <iostream>

using namespace std;  //introduces namespace std

int main()
{	

	cout << "enter your choice (a, b, or c): ";
	char input;
	cin >> input;
	
	
	switch (input) {
		case 'a':
				cout << endl;
				cout << "you entered a\n";
				break;
		case 'b':
				cout << "\n you entered b\n";
				break;
		case 'c':
				cout << "\n you entered c\n";
				break;
		default:
				cout << "\n  invlid input  \n";
				break;
	}
				
	return 0;
}