diff --git a/SMILEBASIC/SMILEBASIC.visualdproj b/SMILEBASIC/SMILEBASIC.visualdproj
index 9f6e23a..af0f869 100644
--- a/SMILEBASIC/SMILEBASIC.visualdproj
+++ b/SMILEBASIC/SMILEBASIC.visualdproj
@@ -205,6 +205,7 @@
   <filesToClean>*.obj;*.cmd;*.build;*.json;*.dep</filesToClean>
  </Config>
  <Folder name="SMILEBASIC">
+  <File path="builtinfunctions.d" />
   <File path="compiler.d" />
   <File path="error.d" />
   <File path="main.d" />
diff --git a/SMILEBASIC/petitcomputer.d b/SMILEBASIC/petitcomputer.d
index 95e4b07..1c51b4d 100644
--- a/SMILEBASIC/petitcomputer.d
+++ b/SMILEBASIC/petitcomputer.d
@@ -177,7 +177,15 @@ class PetitComputer
         renderer = SDL_CreateRenderer(window, -1, 0);
         GRPF.createTexture(renderer);
         //とりあえず
-        auto parser = new Parser(readText("FIZZBUZZ.TXT").to!wstring);
+        auto parser = new Parser(/*readText("FIZZBUZZ.TXT").to!wstring*/"
+
+FOR I=0 TO 10
+ ?I;\"!\",\"=\",FACT(I)
+NEXT
+DEF FACT(N)
+ IF N<=1 THEN RETURN 1
+ RETURN N*FACT(N-1)
+END");
         auto vm = parser.compile();
         bool running = true;
         vm.init(this);