Operator Overloading in C++ : PART 2 ([ ] Operator)

  Array subscript operator [ ] used for array indexing can also be overloaded in C++. In this post I have added a program in which the array subscript operator [ ] is overloaded. The program illustrates an overloaded array subscript operator.

The program also offers a solution to the C++ puzzle question given below.

Floating Point Number in Array Subscript

Write a C++ program in which the following statement compiles without an error.

cout << a[0.123];

The difficulty in solving this puzzle arises from the fact that array subscript should be an integer.  

If you pass a float value to a normal array subscript you will get the following error "Invalid type for array subscript". 

One possible solution is to overload the array subscript operator.

Click here to download the C++ program solving the puzzle.

There might be some other solutions to this puzzle. If you know any other solution please share them here.