#include <stdio.h>
int main()
{
// printf() displays the string inside quotation
printf("Hello, World!");
return 0;
}

Output

Hello, World!

How “Hello, World!” program works?

• The #include <stdio.h> is a preprocessor command. This command tells compiler to include the contents of stdio.h (standard input and output) file in the program.
  The stdio.h file contains functions such as scanf() and print() to take input and display output respectively.
  If you use printf() function without writing #include <stdio.h>, the program will not be compiled.
• The execution of a C program starts from the main() function.
• The printf() is a library function to send formatted output to the screen. In this program, the printf() displays Hello, World! text on the screen.
• The return 0; statement is the “Exit status” of the program. In simple terms, program ends with this statement.

“Hello, World!” program is written in the C programming language

#include <stdio.h>

int main() {
    printf("Hello, World!");
    return 0;
}

In this program, the #include <stdio.h> statement at the beginning is a preprocessor directive that includes the standard input/output library, which contains the printf() function we use to display the “Hello, World!” message on the screen.

The int main() function is the entry point of the program and is where the execution of the program starts. Within the main function, we call the printf() function to output the “Hello, World!” message to the console.

Finally, we use the return 0; statement to indicate that the program has completed successfully.