a better hello example implemented

c-basic/hello.c

@@ -1,8 +1,5 @@
 #include <stdio.h>
 
-int hello()
-{
+void hello() {
    printf("Hello C Programming Language 2025 Examples\n");
-
-  return 0;
 }

c-basic/hello.h

@@ -0,0 +1,6 @@
+#ifndef HELLO_H
+#define HELLO_H
+
+void hello();
+
+#endif

c-basic/main.c

@@ -1,10 +1,7 @@
 #include <stdio.h>
-#include "hello.c"
-
-int main()
-{
+#include "hello.h"
 
+int main() {
     hello();
-  
     return 0;
 }