/* http://www.mrwadlo.com */
#include <stdio.h>
#include <conio.h>
#include <math.h>

int main()
{
	double answer1, answer2;
	int a, b, c;
	char again = 'y';

        clrscr();

	do {
		printf("\n Enter x^2 coeffeciant (a): ");
		scanf("%d",&a);
		printf(" Enter x coeffeciant (b): ");
		scanf("%d",&b);
		printf(" Enter constant (c): ");
		scanf("%d",&c);

		printf("\n Equation: (%d)x^2+(%d)x+(%d)=0",a,b,c);

		printf("\n Formula: -b%c(b^2-4*a*c)^(1/2)/(2*a) = -%d%c(%d^2-4*%d*%d)^(1/2)/(2*%d)",241,b,241,b,a,c,a,c,a);

		if ( a == 0 || b == 0 || c == 0 )
		{
			printf("\n\n Why use the quadratic formula with a zero coeffeciant?");
                }
		else if ( ((b*b)-(4*a*c)) >= 0 )
		{
			answer1 = (((-1)*b) + sqrt((b*b)-(4*a*c)))/(2*a);
			answer2 = (((-1)*b) - sqrt((b*b)-(4*a*c)))/(2*a);

			printf("\n\n answer1 = %f", answer1);
			printf("\n answer2 = %f", answer2);

			if ( answer1 == answer2 )
			{                       
				printf(" (Same)");
			}
		}
		else
		{
			printf("\n Answer is not real");
		}

		printf(" \n\n Would you like to enter another? Y/N\n");
		again = getch();

        } while ( again == 'y' || again == 'Y' );

	return 0;
}