diff --git a/c-basic/main.c b/c-basic/main.c
index 4579bdd..d1b8490 100644
--- a/c-basic/main.c
+++ b/c-basic/main.c
@@ -1,7 +1,13 @@
 #include <stdio.h>
-#include "hello.h"
+#include "print_example.h"
 
 int main() {
-    hello();
+
+  print_example();
+    
     return 0;
 }
+
+/**
+   gcc main.c print_example.c -o print_example
+ **/
diff --git a/c-basic/print_example.c b/c-basic/print_example.c
index 8f723d1..d3cfeba 100644
--- a/c-basic/print_example.c
+++ b/c-basic/print_example.c
@@ -1,12 +1,12 @@
-#include <stdio.h>
+#include "print_example.h"
 
 int print_example()
 {
-  int a = 10, b = 20;
+    int a = 10, b = 20;
 
-  printf("a = %d, b = %d\n", a, b);
-  printf("a ? = %d, b ? = %d\n", b , a);
-  printf("%d%d\n", a, b);
+    printf("a = %d, b = %d\n", a, b);
+    printf("a ? = %d, b ? = %d\n", b , a);
+    printf("%d%d\n", a, b);
 
-  return 0;
+    return 0;
 }
diff --git a/c-basic/print_example.h b/c-basic/print_example.h
new file mode 100644
index 0000000..fc6b28e
--- /dev/null
+++ b/c-basic/print_example.h
@@ -0,0 +1,8 @@
+#ifndef PRINT_EXAMPLE_H
+#define PRINT_EXAMPLE_H
+
+#include <stdio.h>
+
+int print_example();
+
+#endif