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  1. #include <iostream>
  2. #include <string.h>
  3. using namespace std;
  4.  
  5.     class String
  6.     {
  7.         char *m_str;
  8.         size_t m_len, m_alloced;
  9.     public:
  10.         String(const char *str = "")
  11.         {
  12.             m_len = strlen(str);
  13.             m_alloced = m_len + 1;
  14.             m_str = (char *)malloc(m_alloced);
  15.             strcpy(m_str, str);
  16.         }
  17.         String(const String &other)
  18.         {
  19.             m_len = other.m_len;
  20.             m_alloced = m_len + 1;
  21.             m_str = (char *)malloc(m_alloced);
  22.             strcpy(m_str, other.m_str);
  23.         }
  24.         String &operator =(const String &rhs)
  25.         {
  26.             if (m_alloced < rhs.m_len + 1)
  27.             {
  28.                 m_alloced = rhs.m_len + 1;
  29.                 m_str = (char *)realloc(m_str, m_alloced);
  30.             }
  31.  
  32.             m_len = rhs.m_len;
  33.             strcpy(m_str, rhs.m_str);
  34.             return *this;
  35.         }
  36.         const char *get() const
  37.         {
  38.         	return m_str;
  39.         }
  40.     };
  41.  
  42. int main()
  43. {
  44. 	String str1 = "asdf";
  45. 	String str2 = str1;
  46. 	String str3 = "12";
  47. 	str3 = str1;
  48.  
  49. 	cout << str1.get() << endl << str2.get() << endl << str3.get() << endl;
  50. }
  51.  
  52.  
Success #stdin #stdout 0s 3472KB
comments (?)
stdin 
Standard input is empty
stdout 
asdf
asdf
asdf
https://ideone.com/bPlXEZ
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
public

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