Can you explain the difference between pass-by-value and pass-by-reference in programming?

Sure, I'd be happy to explain the difference between pass-by-value and pass-by-reference.

1. Pass-by-value: In pass-by-value, the function receives a copy of the actual parameter's value. In this case, the function can modify the copy, but it doesn't affect the actual parameter. This is because the copy is stored in a new memory location, separate from the actual parameter.

2. Pass-by-reference: In pass-by-reference, the function receives a reference to the actual parameter rather than a copy of its value. This means that the function can modify the actual parameter. The reference is essentially the memory address of the actual parameter, so any changes made to this address will affect the original data.

In summary, the main difference between the two is that pass-by-value doesn't allow the function to modify the actual parameter, while pass-by-reference does.