1 files changed, 73 insertions, 0 deletions
diff --git a/string.h b/string.h
new file mode 100644
index 0000000..dc9ebfc
--- /dev/null
+++ b/string.h
@@ -0,0 +1,73 @@
+/* string.h
+ *
+ */
+
+#ifndef _MYSTRING_
+#define _MYSTRING_
+
+#include <cstring>
+#include <iostream>
+
+using namespace std;
+
+class MyString
+{
+    friend bool operator==(const MyString&, const MyString &);
+    friend ostream& operator<<(ostream&, const MyString &);
+
+    private:
+        char *str_;
+        int length_;
+        MyString(int);
+
+    public:
+        MyString();
+        MyString(char);
+        MyString(const char *);
+        MyString(const MyString &);
+        MyString& operator=(const MyString &);
+        ~MyString();
+
+        int length() const;
+        int indexOf(char, int = 0) const;
+        bool isSubstring(const MyString &) const;
+        bool isSubstring(const char *) const;
+        MyString& concat(const MyString &);
+        MyString& concat(const char *);
+        void printStr(void) const;
+
+        MyString operator!() const;
+        char& operator[](int);
+        char operator[](int) const;
+};
+
+bool operator==(const MyString&, const MyString &);
+ostream& operator<<(ostream&, const MyString &);
+
+inline MyString::MyString()
+{
+    length_ = 0;
+    str_ = new char[1];
+    str_[0] = '\0';
+}
+
+inline MyString::MyString(char ch)
+{
+    length_ = 1;
+    str_ = new char[2];
+    str_[0] = ch;
+    str_[1] = '\0';
+}
+
+inline int MyString::length() const
+{
+    return length_;
+}
+
+inline void MyString::printStr(void) const
+{
+    cout << "length: " << length_ << ", value: \"" << str_ <<"\"";
+}
+
+#endif
+