// exsw1.swift  first example simple output integer, string, double
//              note  //  makes rest of line a comment
//              note  statement ; statement one same line OK
//              note  some operators require space operator space
//                    or operator with no spaces

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

var i = 7          // declare variable i with initial value 7
// var j= 8        // error need  space = space
var j=8            // OK with no spaces
var k = 9; let m = 10  // two statements on one line
let ac = "a"       // single character, let  makes ac unchangeable
var msg = "sample string"  // declare msg with string in quotes
var x = 37.95      // declare floating point x with initial value
var y = 127.34e10  // declare double precision with initial value
    
print("exsw1.swift running");   // simple print title
print("i= \(i)");               // \( )  for any type 
print("ac= \(ac)");             // \( )  for any type 
print("msg= \(msg)");           // \( )  for any type 
print("x= \(x)");               // \( )  for any type 
print("y= \(y)");               // \( )  for any type 
print("sin(1.0)= \(sin(1.0))")  // \( )  for functions