Complex numbers

---

examples/complex-numbers/complex_numbers.go

package main

import "fmt"

func main() {
    n := 2i + 3
    fmt.Printf("%v %T\n", n, n)
    r := real(n)
    fmt.Printf("%v %T\n", r, r)
    i := imag(n)
    fmt.Printf("%v %T\n", i, i)
    fmt.Println()

    z := 1i
    fmt.Printf("%v %T\n", z, z)
    v := z * z
    fmt.Printf("%v %T\n", v, v)
    fmt.Println(v == -1)
    fmt.Println()

    c := complex(4, 5)
    fmt.Printf("%v %T\n", c, c)
}

(3+2i) complex128
3 float64
2 float64

(0+1i) complex128
(-1+0i) complex128
true

(4+5i) complex128