diff --git a/src/calculator.cpp b/src/calculator.cpp
index cc435d8..6bf781b 100644
--- a/src/calculator.cpp
+++ b/src/calculator.cpp
@@ -1,5 +1,9 @@
-#include <vector>
+#ifndef __CALCULATOR_CPP
+#define __CALCULATOR_CPP
+
 #include <string>
+#include <vector>
+#include "debug.cpp"
 #include "stack.cpp"
 
 namespace Calculator
@@ -22,34 +26,6 @@ struct Symbol {
     double value = 0;
 };
 
-void dbgPrint(const std::vector<Symbol>* _input) {
-    std::cout << "\033[31m";
-
-    for (auto it = _input->begin(); it != _input->end(); it++) {
-        auto type = it->type;
-
-        std::cout << "[";
-        if (type == SymbolType::add) std::cout << "+";
-        else if (type == SymbolType::subract) std::cout << "-";
-        else if (type == SymbolType::divide) std::cout << "/";
-        else if (type == SymbolType::multiply) std::cout << "*";
-        else if (type == SymbolType::number) std::cout << it->value;
-        else if (type == SymbolType::left_bracket) std::cout << "(";
-        else if (type == SymbolType::right_bracket) std::cout << ")";
-
-        std::cout << "]";
-    };
-    std::cout << "\033[0m";
-}
-
-void dbgPrint(const std::vector<unsigned int>* _input) {
-    std::cout << "\033[31m";
-    for (auto it = _input->begin(); it != _input->end(); it++) {
-        std::cout << "[" << *it << "]";
-    }
-    std::cout << "\033[31m";
-}
-
 /**
  * @brief the result of parse function.
  */
@@ -412,4 +388,6 @@ parseAndCalculateResult parseAndCaluclate(const std::string& _input, bool debug
     return returnVal;
 }
 
-}; // namespace Calculator
\ No newline at end of file
+}; // namespace Calculator
+
+#endif
\ No newline at end of file
diff --git a/src/debug.cpp b/src/debug.cpp
index c0a2b9e..b141c40 100644
--- a/src/debug.cpp
+++ b/src/debug.cpp
@@ -2,6 +2,7 @@
 #ifndef __DEBUG_CPP
 #define __DEBUG_CPP
 
+#include "calculator.cpp"
 #include "cursor.cpp"
 
 /**
@@ -25,5 +26,38 @@ void debugKey(cursor::key _key) {
     cursor::restorePosition();
 }
 
+/**
+ * @brief Prints the content of _input.
+ * 
+ * @param _input vector of symbols
+ */
+void dbgPrint(const std::vector<Calculator::Symbol>* _input) {
+    for (auto it = _input->begin(); it != _input->end(); it++) {
+        auto type = it->type;
+
+        std::cout << "[";
+        if (type == Calculator::SymbolType::add) std::cout << "+";
+        else if (type == Calculator::SymbolType::subract) std::cout << "-";
+        else if (type == Calculator::SymbolType::divide) std::cout << "/";
+        else if (type == Calculator::SymbolType::multiply) std::cout << "*";
+        else if (type == Calculator::SymbolType::number) std::cout << it->value;
+        else if (type == Calculator::SymbolType::left_bracket) std::cout << "(";
+        else if (type == Calculator::SymbolType::right_bracket) std::cout << ")";
+
+        std::cout << "]";
+    };
+}
+
+/**
+ * @brief Prints the content of _input.
+ * 
+ * @param _input vetcor of unsigned int
+ */
+void dbgPrint(const std::vector<unsigned int>* _input) {
+    for (auto it = _input->begin(); it != _input->end(); it++) {
+        std::cout << "[" << *it << "]";
+    }
+}
+
 #endif
 #endif
\ No newline at end of file