How the Linux system writes A/C + + program

Preface, This article describes the use of Linux Systems to write C + + Language program is implemented in the CentOS Environment, before programming, you must first install Linux System or Linux virtual machines, everything is ready so we can start programming.

(1) . turn on your computer or Linux Virtual Machine (I'm using a virtual machine)

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(2) Create a file

In the top left corner , click Applications, System Tools , terminal

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Get the following results

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(3) Edit File

In the input box, type vim hello.c// here vim refers to creating a file. Hello.chello is the file name can be arbitrarily taken,

. C is a file type, here refers to creating a C file named Hello

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Press the ENTER key to get

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Press the character key ' I '

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Start typing a C language file (here we enter an error code to see how to debug the changes), for example:

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In the program above, I no longer have a semicolon behind printf.

Now we save this program, save method:1. Press the ESC "key. 2. Enter the : wq! ". 3. press ENTER.

Note: The characters inside the double quotes cannot be less!

The process and results are as follows:

upon completion of step 2 :

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After you press ENTER:

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(4) Commissioning and Operation

First compile, enter gcc hello.c-o Hello and press Enter

The function is to build the C file,hello.c compile the hello.obj file

If you are writing a C + + file, enter g++ hello.cpp-o Hello

Before you press ENTER

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After you press ENTER

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Look at the above gives the error prompt, we have to modify the error,

Input vim hello.c

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Press ENTER

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Now see this interface can not be modified, need to press 'A' on the keyboard, the results are as follows, see what is different from the above

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Modify the error (plus our semicolon)

and press ESC and enter : wq!

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Press ENTER

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Now input gcc hello.c-o Hello

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Press ENTER to compile successfully without error

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Enter ./hello and press ENTER to run the program you wrote

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The reason for the top "Hello Word! " "is linked to the statement behind it because I don't have a semicolon.

If you are writing a C + + program, just change gcc to g++ and . C to . cpp .

The specific process is on the top, I am also a beginner, if the great God found that there is a wrong place, you are welcome to criticize correct!

This article is from the "Sharing Progress" blog, be sure to keep this source http://xmwen1.blog.51cto.com/10730069/1706391

How the Linux system writes A/C + + program