PR2 - master - fears/fear

#include <stdio.h>
#include <conio.h>
#include <math.h>
int main(void) {
	float a, b, c;
	float D, x1, x2, x;
	printf("\n\t Equation a*x^2 + b*x + c = 0\n");
	printf("\n\t Enter the coefficient a: ");
	scanf_s("%f", &a);
	printf("\t Enter the coefficient b: ");
	scanf_s("%f", &b);
	printf("\t Enter the coefficient c: ");
	scanf_s("%f", &c);
	D = b*b - 4*a*c;
	if (D >= 0 && a != 0) {
		x1 = -b/(2*a) + (float)sqrt(D)/(2*a);
		x2 = -b/(2*a) - (float)sqrt(D)/(2*a);
		printf("\n\t The roots of the equation:\n\t x1 = %1.4f, x2 = %1.4f\n", x1, x2);
	}
	if (D < 0)
		printf("\n\t The roots of complex\n");
	
	if (a == 0 && b != 0) {
		x = -c/b;
		printf("\n\t As a = %1.0f,\n\t the solution of the equation is: %1.4f\n", a, x); }
	
	printf("\n Press any key: ");
	_getch();
	return 0;
}