diff --git a/HelloWorld.md b/HelloWorld.md
new file mode 100644
index 0000000..1200424
--- /dev/null
+++ b/HelloWorld.md
@@ -0,0 +1,12 @@
+# 나는 서효진이다!
+<hr/>
+```
+#include <stdio.h>
+
+int main(){
+
+  printf("Hello World!");
+  
+  return 0;
+}  
+```