C Hello World

The “Hello World” program in C is the simplest program you can write. It demonstrates the basic syntax and structure of a C program by printing “Hello, World!” to the console.

Hello World Program Code

main.c

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#include <stdio.h>

int main() {
    // Print "Hello, World!" to the console
    printf("Hello, World!\n");
    return 0;
}

Explanation:

  1. #include <stdio.h>: This line includes the Standard Input Output library which is required for using the printf() function.
  2. int main(): This is the main function where the program execution begins. In C, every executable program must have a main() function.
  3. { … }: The curly braces enclose the body of the main() function.
  4. printf(“Hello, World!\n”); : This statement calls the printf() function with the argument “Hello, World!”. The function prints this string to the console.
    The \n inside the string is an escape sequence that creates a new line after printing.
  5. return 0;: This statement ends the main() function and returns 0 to the operating system, indicating that the program finished successfully.

This basic “Hello World” program introduces you to the structure and syntax of a C program. Understanding these fundamental components is essential as you progress to the next concepts in C.