USING OPERATION OVERLOADING AND C++, A Class Set is partially defined as below.

Question

USING OPERATION OVERLOADING AND C++,

A Class Set is partially defined as below. This definition still missing a number of member functions and operators. class Set {public: Set(int[], int);//default constructor Set(const Set&)//copy constructor ~Set();//destructor int getSize() const;//return size private: int size;//set size int *ptr://pointer to first element of set}; Please provide full program implementation of the Class Set with the following operator overloaded. = means assignment operator == means checking equal or not != means checking not equal > means checking the sum of one Set is greater than the sum of another Set > means from input stream to read in element values to put in the Set;

Explanation / Answer

#include<iostream>
#include<conio.h>
using namespace std;
const int SIZE=10;
class Set{
  
   public:
       int num1,num2;
       Set();
       Set(int [],int);//default constructor
       Set(const Set&);//copy Constructor
       ~Set();//destructor
       int getSize()const;//return size
       void operator=(const Set& obj);
       Set(){
           register int i;
           for(i=0;i<SIZE;i++){
               arr[i]=i;
           }
       }
   private:
       int arr[SIZE];
       int size;//set size
       int *ptr;//pointer to first element of set
};
Set::Set (int size ){ //default constructor
size = (size > 0 ? size : 10);
ptr = new int [size]; // ADD THIS LINE
for (int i = 0; i < size; i++)
ptr[ i ] = 0; //initial values
}
void Set::operator=(const Set& obj)
{
(*this).num1= obj.num1;
(*this).num2 = obj.num2;

return;
}
bool Set::operator==(const Set& obj){
   if(num1==obj.num1)
       return true;
   else
       return false;
}
bool Set::operator!=(const Set& obj){
   if(num1!=obj.num1)
       return true;
   else
       return false;
}
bool Set::operator>(const Set& obj){
   if(num1>obj.num1)
       return true;
   else
       return false;
}
bool Set::operator<(const Set& obj){
   if(num1<obj.num1)
       return true;
   else
       return false;
}
Set& Set::operator++(){ //prefix
   ++num;
   return *this;
}
Set Set::operator++(int){ //postfix
   Set temp=*this;
   ++num;
   return temp;
}
Set& Set::operator--(){ //prefix
   --num;
   return *this;
}
Set Set::operator--(int){ //postfix
   Set temp=*this;
   --num;
   return temp;
}

ostream & operator << ( ostream & output, const Set & arr){
for (int i = 0; i < arr.size; i++)
output << arr.ptr[i] ;
return output;
}
istream & operator >> ( istream & in, const Set & arr){
for (int i = 0; i < arr.size; i++)
in >> arr.ptr[i] ;
return in;
}

int &operator[](int i){
   if(i>SIZE){
       cout<<"Index out of bounds"<<endl;
       return arr[0];
   }
   return arr[i];
}
void Set::print(){
   for(int j=0;j<10;j++){
       cout<<arr[j];
   }
}
int main(){
   Set s1,s2,s3;
   s1.num1=2;
   s1.num2=3;
   cout<<s1.num1<<" "<<s1.num2<<;
   s2.num1=2;
   s2.num2=3;
   s3=s1+s2;
   cout<<s3.num1<<" "<<s3.num2<<endl;
   //for Equal
   cout<<s1==s2<<endl;
   //for Not Equal
   cout<<s1!=s2<<endl;
   //for greater
   cout<<s1>s2<<endl;
   //for smaller
   cout<<s1<s2<<endl;
   //for post-increment
   s1++;
   cout<<s1.num1<<endl;
   //for pre increment
   ++s1;
   cout<<s1.num1<<endl;
   //for post decrement
   s1--;
   cout<<s1.num1<<endl;
   //for pre decrement
   --s1;
   cout<<s1.num1<<endl;
  
   for(int i=0;i<10;i++){
       s1[i]=i;
   }
   s1.print();
   //<<
   ofstream fout("out.text");
   fout<<s1;
   //>>
   ifstream fin("in.txt");
   fin>>s1;
  
   cout<<s1;
  
   //for []
   cout<<"Value of s1[3]: "<<s1[3]<<endl;
   cout<<"Value of s1[5]: "<<s153]<<endl;
   return 0;
}

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