Program in C++ to create function in String class to find reverse of given string

Program in C++ to create function in String class to find reverse of given string

#include<iostream>
#include<string.h>
#include<conio.h>
 using namespace std;
   class String
   {
       char *str;
       int length;
     public:
      String()
        {
       length=100;
       str=new char[length];
       strcpy(str,"Programming.om");
     }
  
  void Show()
    {
  cout<<" "<<str;
    }
    
 void Input()
   {
   cout<<"Enter a string:-";
   cin.getline(str,length);
   }
        void Strrev(String &str1)
    {
     int i;
    char temp;
   length=strlen(str1.str);
   str=new char[length+1];
   strcpy(str,str1.str);
   for(i=0;i<=length/2;i++)
     {
         temp=str[i];
         str[i]=str[length-1-i];
         str[length-1-i]=temp;
     }
        }  
    };
    int main()
       {
    
        String s1,s2;
        s1.Input();
        s2.Strrev(s1);
        s2.Show();     
        getch();
 }

Output:-