//************************************************
//   Program to test the poly method
//     L.Aamodt      4/18/16
//   (goal: demonstrate overloading.)
//************************************************
class polynomial {
	int a,b,c,order;
	double da,db,dc;
		// First the constructors
	polynomial() {
		System.out.println("constructor, no parameters given");
		order = 0;
	}
	polynomial(int pa, int pb){
		System.out.println("ax + b constructor, integer");
		a = pa;
		b = pb;
		order = 1;
	}
	polynomial(int pa, int pb, int pc){
		System.out.println("ax^2 + bx + c constructor, integer");
		a = pa;
		b = pb;
		c = pc;
		order = 2;
	}
	polynomial(double pa, double pb){
		System.out.println("ax + b constructor, double");
		da = pa;
		db = pb;
		order = 1;
	}
	polynomial(double pa, double pb, double pc){
		System.out.println("ax^2 + bx + c constructor, double");
		da = pa;
		db = pb;
		dc = pc;
		order = 2;
	}
			// Now the methods
	int poly(int x){
		int result=0;
		switch(order){
		case 0:
			System.out.println("error 0 (caused by object w/o parameters)");
			break;
		case 1:
			result = a*x + b;
			break;
		case 2:
			result = a*x*x + b*x + c;
			break;
		default:
			System.out.println("error 1 (caused by invalid order value)");
		}
		return result;
	}

	double poly(double x){
		double result2=0;
		switch(order){
		case 0:
			System.out.println("error 0.0 (caused by an object w/o parameters)");
			break;
		case 1:
			result2 = da*x + db;
			break;
		case 2:
			result2 = da*x*x + db*x + dc;
			break;
		default:
			System.out.println("error 1.0 (caused by object w/o parameters)");
		}
		return result2;
	}
	
}
public class poly_test {
	public static void main(String[] args) {
		int x = 4;
		double y = 4.0;
		polynomial p0 = new polynomial();		// no parameters
		polynomial p1 = new polynomial(3,4);
		polynomial p2 = new polynomial(5,2,3);
		polynomial p3 = new polynomial(3.0,4.0);
		polynomial p4 = new polynomial(5.0,2.0,3.0);
		
		System.out.println("\n  Now the calculated polynomial values\n");
		
		System.out.println(p0.poly(x) + " (object w/o parameters)");
		System.out.println(p1.poly(x) + " (int,int)");
		System.out.println(p2.poly(x) + " (int,int,int)");
		System.out.println(p3.poly(y) + " (double,double)");
		System.out.println(p4.poly(y) + " (double,double,double)");

	}

}