tools - just add a c++ playground file

.gitignore

@@ -2,3 +2,4 @@
 /build.conf
 
 build/
+/tools/a.out

tools/test_cxx.cc

@@ -0,0 +1,29 @@
+#include <iostream>
+
+template<unsigned int SIZE> struct Supplier {
+    char data[5]{ 'h', 'e', 'l', 'l', 'o' };
+    uint8_t pos{ 0 };
+
+    char next()
+    {
+        pos++;
+        if (pos >= SIZE) {
+            return -34;
+        }
+
+        return data[pos];
+    }
+};
+
+int main()
+{
+    std::cout << "BEGIN" << std::endl;
+    Supplier<5> sup{};
+
+
+        while (char c = true) {
+            std::cout << c;
+        }
+
+    std::cout << "END" << std::endl;
+}