swift-02 Control of Code flow

//

Main.swift

//02- Statement

//

Created by Wanghy on 15/8/9.

//Copyright (c) years Wanghy. All rights reserved.

//

Import Foundation

1.

// flow of control code using branch loops

// Branch: If If - Else Switch

// Loop: for and do - while for - inch

// true or false: with BOOL judging the true and false, the value is true and the false

//2. except Do - while and the Switch the other is basically the same, the difference is parentheses can be omitted, and curly braces cannot be omitted. For example: if (1<2){print (" I was printed ")}

If1<2

{

println ("1<2")

}

Else {

println ("1<2")

}

//3. constants can only be defined once. var-guided variables can be arbitrarily modified and assigned

var Num: Int = - ;

Num = at ;

4.

//switch You have to put all the possibilities in Case the. Multiple values can be shared one at a time, separated by commas. To have a default

//5. Looping Statements . in the 2.0 not in Do-while loops. Instead, the repeat- while loop , do in 2.0 is used as exception handling ( Do - Catch ).

// Cyclic request 1-100 and the

var sum = 0

var i = 1

while I<=

{

sum + =I+ +

}

println (sum)

//do Loops

var sum1 = 0 , j= 1

Do {

sum1 + =J+ +

} while J <=

println (SUM1)

//for Loops , operators must be separated from curly braces.

var sum3 = 0 , k= 1

for ; k <= - ; I ++ {

sum3 + +k+ +

}

println (sum3)

//for in Loops

var array = [1,2,3,4, 5]

var z:int8 = 1;

for Temp inch Array

{

if (temp! =1 && temp! = 5)

{

println (temp)

}

}

Copyright NOTICE: This article for Bo Master original article, without Bo Master permission not reproduced.

swift-02 Control of Code flow