Swift 2.3 my first swift Program

Tag: swift

2.3 my first swift Program

Step 1: Create a new playground sports field program example

In application, select xcode. after entering the "Welcome to xcode" window, select "get started with a playground ", to create a new playground event program example.

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12.

Step 2: Determine the storage location

Next, determine the location of the stored statement.

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Memory location of lifecycle 13

Step 3: Enter the playground Field Program Mode

Enter the playground Field Program mode in the xcode environment. 650) This. width = 650; "class =" alignnone wp-image-5675 "src =" http://www.powenko.com/wordpress/wp-content/uploads/2014/08/14.jpg "alt =" 14 "width =" 560 "Height =" 557 "/>

14. Enter the playground Field Program Mode

Step 4: Enter the playground Field Program Mode

Enter the following program.

Example 2-1 myplayground. Playground

1. Import cocoa // Add the function to define cocoa

2. 
   

3. VaR STR = "Hello, playground" // change the STR parameter to "Hello, playground"

4. Println ("how are you? ") // Text display

5. Println (STR)

6. VaR a1 = 10 // set the variable A1

7. A1 = A1 + 1 // A1 plus 1

Step 5: Program publish

When swuft is created, the relevant changes on the right side are displayed on the plane,

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Revision 15 modified program faces

Step 5: Console Output Window

The console output window appears on the right side of the entire program. If you want to close the window, click "X" in the upper right corner and press "continue, you can disable it.

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The console output window is displayed in limit 16.

The result of the rows:

The line result of this program shows that the second line of text is different

How are you

Hello, playground

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17 then the result is returned.

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