C Programming

My First Program

#include <stdio.h>
/* My First C Program */
main()
{
    printf("Hello World");
}

The first line of the program #include <stdio.h> is a preprocessor command, which tells a C compiler to include stdio.h file before going to actual compilation.
The second line /*...*/ will be ignored by the compiler and it has been put to add additional comments in the program. So such lines are called comments in the program.
The next line main() is the main function where the program execution begins.
The next line printf(...) is another function available in C which print the message "Hello, World!" to be displayed on the screen.