Update hello_world.c

hello_world.c

@@ -1,4 +1,6 @@
-#include<stdio.h>
-int main(){
-    printf("Hello, World!");
+#include <stdio.h>  // Include standard input-output library
+
+int main() {  // Main function where execution starts
+    printf("Hello, World!");  // Print "Hello, World!" to the console
+    return 0;  // Return 0 to indicate successful execution
 }