Quadratic equation in Scala

Example for versions Simply Scala

This example shows that string processing and Math in Scala are implemented similarly to Java. 

def output(real: Double, imag: Double): String = 
    if (imag == 0) ""+real
              else "("+real+","+imag+")"

def solve(A: Int, B: Int, C: Int)
{   if (A == 0) print("Not a quadratic equation.")
    else
    {   def D = B*B - 4*A*C
        if (D == 0) print("x = "+output(-B/2.0/A, 0))
        else if (D > 0) print("x1 = "+output((-B+Math.sqrt(D))/2.0/A, 0)+"\nx2 = "+output((-B-Math.sqrt(D))/2.0/A, 0))
             else print("x1 = "+output(-B/2/A, Math.sqrt(-D)/2.0/A)+"\nx2 = "+output(-B/2/A, -Math.sqrt(-D)/2.0/A))
    }
}