How to Compile and Run a C Program on Ubuntu Linux
[Pages:7]How to Compile and Run a C Program on Ubuntu Linux
Keld Helsgaun Roskilde University, February 2013 This document shows how to compile and run a C program on Ubuntu Linux using the gcc compiler. Step 1. Open up a terminal Search for the terminal application in the Dash tool (located as the topmost item in the Launcher). Open up a terminal by clicking on the icon.
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For ease of future access to the terminal application, right click its icon in the Launcher and select "Lock to Launcher".
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Step 2. Use a text editor to create the C source code. Type the command
gedit hello.c
and enter the C source code below:
#include main() {
printf("Hello World\n"); }
Close the editor window.
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Step 3. Compile the program. Type the command
gcc -o hello hello.c
This command will invoke the GNU C compiler to compile the file hello.c and output (-o) the result to an executable called hello.
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Step 4. Execute the program. Type the command
./hello
This should result in the output
Hello World
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Optional step In order to avoid the./ prefix each time a program is to be executed, insert the following as the last line in the file .profile (located in your home folder):
export PATH=.:$PATH
This step needs only to be done once.
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