diff --git a/cpp/config.toml b/cpp/config.toml
new file mode 100644
index 0000000..b88f474
--- /dev/null
+++ b/cpp/config.toml
@@ -0,0 +1,6 @@
+[main]
+height = 720
+width = 1280
+
+[others]
+backgrounds = [ 'test1.png', 'test2.png', 'test3.png' ]
\ No newline at end of file
diff --git a/cpp/jsonfile_tests/json_object b/cpp/jsonfile_tests/json_object
new file mode 100644
index 0000000..9c295d7
Binary files /dev/null and b/cpp/jsonfile_tests/json_object differ
diff --git a/cpp/jsonfile_tests/json_object.cpp b/cpp/jsonfile_tests/json_object.cpp
index e0e8d0e..913e881 100644
--- a/cpp/jsonfile_tests/json_object.cpp
+++ b/cpp/jsonfile_tests/json_object.cpp
@@ -19,22 +19,30 @@ void read_json_file()
 void create_json_file()
 {
     // Create json data
-    json data = json::parse(R"(
-        {
-            data1 : {},
-            data2 : {}
-        }
-    )");
+    json data = json::parse(R"({
+        "error": {
+            "code": 101,
+            "message": "operation failed!"
+        },
+        "result": {
+            "backgrounds": ["test1.png", "test2.png", "test3.png"]
+        },
+        "data2": {}
+	})");
 
     // Create json object for a key
-    // json data2 = json::parse(R"(
-    //     {
-    //         test1:2,
-    //         test2:3
-    //     }
-    // )");
+    json data2 = json::parse(R"({
+        "error": {
+            "code": 101,
+            "message": "operation failed!"
+        },
+        "result": {
+            "backgrounds": ["test1.png", "test2.png", "test3.png"]
+        },
+        "data2": {}
+	})");
 
-    // data["data2"] = data;
+    data["data2"] = data2;
     // auto data2 = data["data2"];
     // std::cout << data2 << std::endl;
 
diff --git a/cpp/jsonfile_tests/test.json b/cpp/jsonfile_tests/test.json
new file mode 100644
index 0000000..b97f3f3
--- /dev/null
+++ b/cpp/jsonfile_tests/test.json
@@ -0,0 +1,27 @@
+{
+    "data2": {
+        "data2": {},
+        "error": {
+            "code": 101,
+            "message": "operation failed!"
+        },
+        "result": {
+            "backgrounds": [
+                "test1.png",
+                "test2.png",
+                "test3.png"
+            ]
+        }
+    },
+    "error": {
+        "code": 101,
+        "message": "operation failed!"
+    },
+    "result": {
+        "backgrounds": [
+            "test1.png",
+            "test2.png",
+            "test3.png"
+        ]
+    }
+}
\ No newline at end of file
diff --git a/cpp/toml_test b/cpp/toml_test
new file mode 100644
index 0000000..7ae08ad
Binary files /dev/null and b/cpp/toml_test differ
diff --git a/cpp/toml_test.cpp b/cpp/toml_test.cpp
index e69de29..8ed374a 100644
--- a/cpp/toml_test.cpp
+++ b/cpp/toml_test.cpp
@@ -0,0 +1,53 @@
+#include <iostream>
+#include <fstream>
+#include <sstream>
+#include "../toml/toml.hpp"
+using namespace std::string_view_literals;
+
+void save_toml_file()
+{
+    static constexpr std::string_view some_toml = R"(
+        [main]
+        width = 1280
+        height = 720
+
+        [others]
+        backgrounds = ["test1.png", "test2.png", "test3.png"]
+    )"sv;
+
+    try
+    {
+        // parse directly from a string view:
+        toml::table tbl = toml::parse(some_toml);
+        std::cout << tbl << "\n";
+
+        // Save data to a file
+        std::fstream outfile;
+        outfile.open("config.toml", std::ios_base::out);
+        if (outfile.is_open())
+        {
+            outfile << tbl;
+        }
+        outfile.close();
+
+        // // parse from a string stream:
+        // {
+        //     std::stringstream ss{ std::string{ some_toml } };
+        //     toml::table tbl = toml::parse(ss);
+        //     std::cout << tbl << "\n";
+        // }
+    }
+    catch (const toml::parse_error &err)
+    {
+        std::cerr << "Parsing failed:\n"
+                  << err << "\n";
+        return;
+    }
+}
+
+int main()
+{
+    save_toml_file();
+
+    return 0;
+}
\ No newline at end of file