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Hello, World!

A minimal C program that prints Hello, World! to the console. This example demonstrates:

  • Including standard headers
  • Defining the main function
  • Using printf to display text
  • Returning an exit status
#include <stdio.h>

// Entry point of the program
int main(int argc, char *argv[]) {
  // Print greeting message to stdout
  printf("Hello, World!\n");
  // Return 0 to indicate successful execution
  return 0;
}

How it Works​

#include <stdio.h>

Includes the Standard Input/Output library, which provides functions like printf.

int main(int argc, char *argv[])

This is the entry point of the C program.

  • argc: Number of command-line arguments passed to the program
  • argv: Array of strings representing those arguments

printf("Hello, World!\n");

Prints the message Hello, World! followed by a newline character (\n).

return 0;

Indicates that the program has terminated successfully.

Compilation & Execution​

Use the following commands in your terminal:

# Compile the program
gcc -o hello hello.c

# Run the executable
./hello