My first c program in Ubuntu (with the installation of gcc and g ++ in Ubuntu)

My first c program under Ubuntu (with the gcc and g ++ installation methods under Ubuntu)-General Linux technology-Linux programming and kernel information. The following is a detailed description. The Code is as follows:
Open the text editor and run the following code:
# Include
Main ()
{
Int k;
For (k = 0; k <3; k ++)
Add ();

}

Add ()
{
Static int x = 0;
X ++;
Printf ("x = % d \ n", x );
}
Save the file as z. c.

Then, open the command line window. After entering the directory where z. c is located
Type: $ gcc-o z. c
I found that I could not get the normal result. I searched the internet and found that ubuntu didn't install the C language compiler by default.

However, to install gcc, you only need to run the following command:
Sudo apt-get install build-essential
The sudo command is very important. If you skip it, the system will prompt that your permissions are insufficient.
Press enter, enter the password, and then hand it over to the system. It takes some time to download the package from the Internet and install it later.

Then
Type: $ gcc-o z. c
You can open a file named c in the corresponding folder.
Enter./z.