/*
変数の宣言
varは変数、letは定数
*/
var myVar = 42
myVar = 50
let myConst = 42
// myConst = 50 // error: cannot assign to value: 'myConst' is a 'let' constant
print("Hello, world!")
print("myVar = \(myVar), myConst = \(myConst)")
/*
変数の宣言
varは変数、letは定数
*/
var myVar = 42
myVar = 50
let myConst = 42
// myConst = 50 // error: cannot assign to value: 'myConst' is a 'let' constant
print("Hello, world!")
print("myVar = \(myVar), myConst = \(myConst)")