Question

How to implement the prefix -- Decrement operator overloading in C++

Answer 1

#include <iostream>

class OperatorOverloading
{
	private:
		int n;
	public:
		OperatorOverloading() : n(5) {  }

		OperatorOverloading operator --()
		{
			OperatorOverloading tmp;
			n--;
			tmp.n = n;

			return tmp;
		}
		void Display()
		{
			std::cout << "n = " << n << std::endl;
		}
};

int main()
{
	OperatorOverloading objA, objB;

	objA.Display();
	objB.Display();

	objB = --objA;

	objA.Display();
	objB.Display();

	return 0;
}



/*
run:

n = 5
n = 5
n = 4
n = 4

*/

 

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