/*A simple program that calculates the roots of a quadratic equation, using the coefficients as input, and outputing the roots*/
/*ALEXANDROS AGRAFIOTIS,ECE UTH,02/11/2020*/

#include <stdio.h>
#include <math.h> /* Needed for sqrt function */

int main(int argc, char* argv[]){
    double quadratic,linear,constant,root1,root2; /*Coefficients and roots*/

    printf("\nCoefficients: ");

    printf("\nQuadratic: "); /* Alias : a */
    scanf("%lf",&quadratic);

    printf("\nLinear: "); /* Alias : b */
    scanf("%lf",&linear);

    printf("\nConstant: "); /* Alias : c */
    scanf("%lf",&constant);

    /*Calculate roots*/
    /* Formula = (-b ± sqrt(b*b - 4*a*c)) / 2*a */
    root1 = (-linear + sqrt(linear*linear - 4*quadratic*constant)) / (2*quadratic);
    root2 = (-linear - sqrt(linear*linear - 4*quadratic*constant)) / (2*quadratic) ;

    printf("\nRoots: %09.4lf, %09.4lf\n",  (root1<root2)? root1 : root2, (root1>root2)? root1 : root2);

    return(0);
}