oop xml

#include <iostream>
#include <ctime>
#include <cstring>

using namespace std;

class String{
private:
    char* str;
public:
    String();
    String(const char *s)
    {
        str = new char[strlen(s)+1];
        strcpy(str, s);
    }
    void print()
    {
        cout << str << endl;
    }

    String operator+(String other)
    {
        String result;
        result.str = new char[strlen(str)+strlen(other.str)+1];
        strcpy(result.str, str);
        strcat(result.str, other.str);
        return result;
    }
    String& operator=(const String& other)
    {
        delete[] str;
        str = new char(strlen(other.str)+1);
        strcpy(str, other.str);
        return *this;
    }
    bool operator==(String other)
    {
        return strcmp(str, other.str);
    }
    ~String()
    {
        delete[] str;
    }
};

//class File
int main()
{
    String str1;
    String str2;
    str1="hello ";
    str2="world";
    str1 = str2;
    str1.print();

    return 0;
}