// Author:  Keith Shomper
// Date:    9/22/03
// Purpose: To demonstrate the one-, two-, and multi-alternative selections 
//          statements

#include <iostream>
#include <string>

using namespace std;

int main () {

	const int drivingAge = 16, votingAge = 18, adultAge = 21;

	int       age;
	char      Grade;
	float     CS1210_Ave;
	string    s;

	// Get the values of some variables to work with
	cout << "How old are you:  ";
	cin >> age;

	cout << "What is your current average in CS1210: ";
	cin >> CS1210_Ave;
	getline(cin, s, '\n');
	getline(cin, s, '\n');

	// Single-alternative selection statement
	if (age == drivingAge) {
		cout << "Sweet 16!!!" << endl;
	}
	getline(cin, s, '\n');

	// Two-alternative selection statement
	if (CS1210_Ave > 83) {
		cout << "Looks like your hard work is paying off.";
	} else {
		cout << "Let's work together to see if we can get that average up.";
	}
	cout << endl;
	getline(cin, s, '\n');

	// Multi-alternative selection statement.  What's wrong with this code??
	if (CS1210_Ave >= 60) {
		Grade = 'D';
	} else if (CS1210_Ave >= 70) {
		Grade = 'C';
	} else if (CS1210_Ave >= 80) {
		Grade = 'B';
	} else if (CS1210_Ave >= 90) {
		Grade = 'A';
	} else {
		Grade = 'F';
	}

	cout << "Your grade for the class up to now is a(an) " << Grade << endl;
	getline(cin, s, '\n');

	// Corrected multi-alternative selection statement.
	if (CS1210_Ave >= 90) {
		Grade = 'A';
	} else if (CS1210_Ave >= 80) {
		Grade = 'B';
	} else if (CS1210_Ave >= 70) {
		Grade = 'C';
	} else if (CS1210_Ave >= 60) {
		Grade = 'D';
	} else {
		Grade = 'F';
	}

	cout << "Your grade for the class up to now is a(an) " << Grade << endl;
	getline(cin, s, '\n');

	// example switch statement (an alternative to the 
	// multi-alternative selection when the cases can be listed or
	// enumerated).
	switch (Grade) {
		case 'D':
			cout << "time to get to work, because ";
		case 'C':
			cout << "we can do better";
			break;
		case 'B':
			cout << "good job";
			break;
		case 'A':
			cout << "great job";
			break;
		default :
			cout << "you need to get a tutor, fast!";
	}
	cout << endl;
}