diff --git a/version0.15/version0.15.1/test.cpp b/version0.15/version0.15.1/test.cpp
deleted file mode 100644
index dfa731a..0000000
--- a/version0.15/version0.15.1/test.cpp
+++ /dev/null
@@ -1,122 +0,0 @@
-#include <iostream>
-#include <cstring>
-#include <list>
-
-class ASTree
-{
-	protected:
-		int line;
-		int type;
-		std::string content;
-		std::list<ASTree> children;
-	public:
-		ASTree()
-		{
-			line=0;
-			type=0;
-			content="root";
-			children.clear();
-		}
-		virtual ASTree& child(int n)
-		{
-			int cnt=0;
-			std::list<ASTree>::iterator _child;
-			for(std::list<ASTree>::iterator i=children.begin();i!=children.end();++i)
-			{
-				if(n==cnt)
-				{
-					_child=i;
-					break;
-				}
-				++cnt;
-			}
-			return *_child;
-		}
-		virtual int num_children()
-		{
-			int cnt=0;
-			type=0;
-			for(std::list<ASTree>::iterator i=children.begin();i!=children.end();++i)
-				++cnt;
-			return cnt;
-		}
-		virtual std::list<ASTree>& return_child()
-		{
-			return children;
-		}
-		void print_tree()
-		{
-			if(content=="leaf")
-			{
-				std::cout<<"( "<<content<<" )";
-				return;
-			}
-			std::cout<<"( "<<content<<" ";
-			for(std::list<ASTree>::iterator i=children.begin();i!=children.end();++i)
-			{
-				i->print_tree();
-			}
-			std::cout<<" )";
-			return;
-		}
-		virtual void setcontent(std::string str)
-		{
-			content=str;
-			return;
-		}
-};
-
-class ASTList:public ASTree
-{
-	public:
-		ASTList()
-		{
-			line=0;
-			type=0;
-			content="subtree";
-			children.clear();
-		}
-};
-
-class ASTLeaf:public ASTree
-{
-	public:
-		ASTLeaf()
-		{
-			line=0;
-			content="leaf";
-			children.clear();
-		}
-		ASTree& child(int n)
-		{
-			std::list<ASTree>::iterator _child=children.end();
-			return *_child;
-		}
-		int num_children()
-		{
-			return 0;
-		}
-};
-
-int main()
-{
-	ASTList root;
-	ASTList subroot;
-	ASTLeaf leaf;
-	
-	root.setcontent("root");
-	
-	leaf.setcontent("1");
-	subroot.return_child().push_back(leaf);
-	leaf.setcontent("2");
-	subroot.return_child().push_back(leaf);
-	subroot.setcontent("+");
-	root.return_child().push_back(subroot);
-	
-	leaf.setcontent("2147483648");
-	root.return_child().push_back(leaf);
-	subroot.return_child().push_back(subroot);
-	root.return_child().push_back(subroot);
-	root.print_tree();
-	return 0;
-}