Before we start the basics of the C programming language, we need to learn how to write, compile and run the c first program.

#include 

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

Let us take a look at the various parts of the above program −

1. The first line of the program #include is a preprocessor command, which tells a C compiler to include stdio.h file before going to actual compilation.
2. int main() The main() function is the entry point of every program in c language.
3. The next line printf(...) is another function available in C which causes the message "Hello, World!" to be displayed on the screen.
4. return 0 The return 0 statement, returns execution status to the OS. The 0 value is used for successful execution and 1 for unsuccessful execution.