Day1(ex2)

#include <stdio.h>
#include <stdlib.h>

int main()
{
    float a, b, c, D, x1, x2;
    printf("a = ");
    scanf("%f", &a);
    printf("b = ");
    scanf("%f", &b);
    printf("c = ");
    scanf("%f", &c);
    D = b*b - 4*a*c; // D = b**b - 4*a*c
    if(fabs(D) > 0.001) {
        x1 = x2 = -b / (2*a); // -b / (2*a)
        printf("x1 = x2 = %.2f\n", x1);
    } else if (D > 0) {
        x1 = (-b + sqrt(D)) / (2*a);
        x2 = (-b - sqrt(D)) / (2*a);
        printf("x1 = %.2f\nx2 = %.2f\n", x1, x2);
    } else {
        printf("No real roots. :( (D = 0)");
    }
    return 0;
}