// exsw5.swift  if, then, else conditional statements, switch case

#if os(OSX) || os(iOS) // for libraries, portable for OSX and Linux
import Foundation
#elseif os(Linux)
import Glibc
#endif// 

print("exsw5.swift running")

var x : Double = 2.0             // declare test variable
var i = 3

if x < 3.0 { // <  >  <=  >=  ==  !=  compare operations
  print("compare < > <= >= == != x= \(x)")
}

if x > 3.0 || i == 3 && i > 2 { //  || is or,  && is and
  print("logic || is or, && is and i= \(i)")
}

if x > 3.0 {
  print("x > 3.0")
}
else if i < 3 {        // optional
  print("i < 3")
}
else {                  // optional, get here if none of the above true
  print("none of the above")
} // end if  optional comment

// switch case default statements

var aval = 2
switch aval {
  case 1:
    print("case 1")
  case 2:
    print("case 2")
  default:
    print("none of above")
} // end switch

var vegetable = "watercress"
switch vegetable {
  case "celery":
    print("Add some raisins.")
  case "cucumber", "watercress":
    print("That would make a good tea sandwich.")
  default:
    print("Everything tastes good in soup.")
}

print("exsw5.swift finished")