Functions III (Templates)

Swap multiple data types

When we encounter a scenario where we need to perform an operation on different data types, it can be tempting to write a separate function for each type. However, this can quickly lead to redundant code and make maintenance of the program code difficult.

For example, we have a swap function that can only swap two integer values. What if we have to swap int, double, and float values in our program? One possible solution is to write a separate swap function for each data type.

If we define a separate swap function for each data type, our program would look like the following code: