Operating complex numbers

Complex numbers are usually used for scientific applications and calculations. Go implements complex numbers as the primitive type. The specific operations on complex numbers are part of the math/cmplx package.

How to do it...

1. Open the console and create the folder chapter03/recipe09.
2. Navigate to the directory.
3. Create the complex.go file with the following content:

        package main

        import (
          "fmt"
          "math/cmplx"
        )

        func main() {

          // complex numbers are
          // defined as real and imaginary
          // part defined by float64
          a := complex(2, 3)

          fmt.Printf("Real part: %f \n", real(a))
          fmt.Printf("Complex part: %f \n", imag(a))

          b := complex(6, 4)

          // All common
          // operators are useful
          c := a - b
          fmt.Printf("Difference : %v\n", c)
          c = a + b
          fmt.Printf("Sum : %v\n", c)
          c = a * b
          fmt.Printf(...