1 #include <iostream>
2
3 class String
4 {
5 private:
6 char *m_BufMemPtr;
7 int m_BufSize;
8
9 public:
10 String(const char *srcbuf)
11 {
12 m_BufSize = strlen(srcbuf);
13 m_BufMemPtr = new char[m_BufSize + 1];
14 memcpy(m_BufMemPtr, srcbuf, m_BufSize);
15 m_BufMemPtr[m_BufSize] = '\0';
16 }
17 String(const String& str)
18 {
19 this->m_BufSize = str.m_BufSize;
20 this->m_BufMemPtr = new char[m_BufSize + 1];
21 memcpy(this->m_BufMemPtr, str.m_BufMemPtr, m_BufSize);
22 m_BufMemPtr[this->m_BufSize] = '\0';
23 }
24
25 ~String()
26 {
27 delete[] m_BufMemPtr;
28 }
29
30 friend std::ostream& operator<<(std::ostream& stream,const String& str);
31 };
32
33 std::ostream& operator<<(std::ostream& stream, const String& str)
34 {
35 stream << str.m_BufMemPtr << std::endl;
36 return stream;
37 }
38
39 int main()
40 {
41 String str1("hello world");
42 String str2 = str1;
43 std::cout << str1;
44 std::cout << str2;
45 }
