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June 28, 2014

How to save the C Programming source code

Lets look at how to save the C Programming source code in a file, and how to compile and run it. Following are the simple steps:

Example Code:

int main()
   /* my first program in C */
   printf("Hello, World! \n");
   return 0;

  1. Open a text editor and add the above-mentioned code.
  2. Save the file as hello.c
  3. Open a command prompt and go to the directory where you saved the file.
  4. Type gcc hello.c and press enter to compile your code.
  5. If there are no errors in your code the command prompt will take you to the next line and would generate a.out executable file.
  6. Now, type a.out to execute your program.
  7. You will be able to see "Hello World" printed on the screen

$ gcc hello.c
$ ./a.out
Hello, World!

Make sure that gcc compiler is in your path and that you are running it in the directory containing source file hello.c.

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