using new to get memory for strings : new « Development « C++ Tutorial

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2. Development
3. new

#include <iostream>  
  #include <cstring>       
  using namespace std;  

  class String {  
     private:  
        char* str;
     public:  
        String(char* s){  
           int length = strlen(s);   
           str = new char[length+1]; 
           strcpy(str, s);           
        }  
        ~String() {  
           delete[] str;             
        }  
        void display(){  
           cout << str << endl;  
        }  
  };  
  int main()  
  {
     String s1 = "this is a test";  
    
     cout << "s1="; 
     s1.display();  
     return 0;  
  }