Chapter3_Logic_Ex2

import java.util.Scanner;
/*  ==================================================
      Chapter 3: Logical and conditional expressions

                    Ex2: Ax+B=0
    ===================================================
*/

public class MyProgram {
    public static void main(String[] args) {

        //variables
        int a,b;
        float x;
        Scanner s=new Scanner(System.in);

        //user input
        System.out.println("Solution for Ax+B=0");
        System.out.println("Enter A: ");
        a=s.nextInt();
        System.out.println("Enter B: ");
        b=s.nextInt();

        // X = NO solution
        if(a==0 && b!=0)
            System.out.println("X = NO solution");

       else if(b==0) {

            // X = infinity solution
            if (a == 0)
                System.out.println("X = infinity solutions");
            else
                // X = 0
                System.out.println("X = 0");
        }

        else{
            //X = one solution
            x=(-1*((float)b/a));
            System.out.println("X = "+ x);

            //option 2:
            //System.out.println("X= -"+b+"/"+a);
        }

    }
}