CS106A|CS106A assignment2 --problem1 QuadraticFormula
【CS106A|CS106A assignment2 --problem1 QuadraticFormula】/* TODO: A program that the roots of the quadratic equation
/
import acm.program.;
public class QuadraticFormula extends ConsoleProgram {
public int a,b,c;
public double discriminant;
public double root1,root2;
public void run() {
getNumber();
getRoots();
}private void getNumber() {
println("This program needs three intengers:");
a = readInt("Enter first int a:");
b = readInt("Enter second int b:");
c = readInt("Enter third int c:");
}private void getRoots() {
getDiscriminant();
showRoots();
}private double getDiscriminant() {
discriminant = b*b - 4*a*c;
return discriminant;
}private void showRoots() {
if(discriminant < 0){
println("There are no real roots");
}else if(discriminant ==0 ){
root1 = (-b)/(2*a);
println("there is one root:"+ root1);
}else {
root1 = (-b+ Math.sqrt(discriminant))/(2*a);
root2 = (-b- Math.sqrt(discriminant))/(2*a);
println("one root is:"+root1);
println("another root is:"+root2);
}
}
}
