1 files changed, 5 insertions, 6 deletions
diff --git a/string.h b/string.h
index dc9ebfc..dbc8e88 100644
--- a/string.h
+++ b/string.h
@@ -8,12 +8,10 @@
 #include <cstring>
 #include <iostream>
 
-using namespace std;
-
 class MyString
 {
     friend bool operator==(const MyString&, const MyString &);
-    friend ostream& operator<<(ostream&, const MyString &);
+    friend std::ostream& operator<<(std::ostream&, const MyString &);
 
     private:
         char *str_;
@@ -36,13 +34,14 @@ class MyString
         MyString& concat(const char *);
         void printStr(void) const;
 
-        MyString operator!() const;
+        bool operator!(void) const;
         char& operator[](int);
         char operator[](int) const;
+        operator char*(); /* outward class conversion into char * */
 };
 
 bool operator==(const MyString&, const MyString &);
-ostream& operator<<(ostream&, const MyString &);
+std::ostream& operator<<(std::ostream&, const MyString &);
 
 inline MyString::MyString()
 {
@@ -66,7 +65,7 @@ inline int MyString::length() const
 
 inline void MyString::printStr(void) const
 {
-    cout << "length: " << length_ << ", value: \"" << str_ <<"\"";
+    std::cout << "length: " << length_ << ", value: \"" << str_ << "\"";
 }
 
 #endif