diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..722d5e7
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+.vscode
diff --git a/cpp/.gitignore b/cpp/.gitignore
deleted file mode 100644
index 600d2d3..0000000
--- a/cpp/.gitignore
+++ /dev/null
@@ -1 +0,0 @@
-.vscode
\ No newline at end of file
diff --git a/cpp/test.cpp b/cpp/test.cpp
deleted file mode 100644
index c52986a..0000000
--- a/cpp/test.cpp
+++ /dev/null
@@ -1,33 +0,0 @@
-#include <iostream>
-#include <string>
-using namespace std;
-class Solution {
-public:
-    string replaceSpace(string s) {
-        int count = 0;
-        int lenth = s.size();
-        for(auto i = 0; i < lenth; ++i){
-            if(s[i] == ' '){
-                count = count + 1;
-            }
-        }        
-        s.resize(s.size() + 2 * count);
-        for(int i = lenth - 1, j = s.size() - 1; i < j; --i, --j){
-            if (s[i] != ' ')
-                s[j] = s[i];
-            else {
-                s[j - 2] = '%';
-                s[j - 1] = '2';
-                s[j] = '0';
-                j -= 2;
-            }
-        }
-        return s;
-    }
-};
-
-int main(){
-    string s = "We are happy.";
-    Solution test;
-    cout<<test.replaceSpace(s)<<endl;
-}
\ No newline at end of file