(E) Sum of vector elements¶

Goal: I will practice implementing recursion further as well as STL’s vector.

Instructions: Retrieve the code template: templates/06/sum/ -> student/06/sum/. For automated testing, the template contains the definition RECURSIVE_FUNC. You need not care about it, and you must not change it.

In the code template, implement function sum_recursive that follows a recursive algorithm and returns the sum of integers found in vector. The function should have only a single parameter: vector, the elements of which will be added together.

Since the aim is to write a recursive function, loops (for or while) are not allowed.

Example on program execution:

Enter integers separated by spaces: 1 2 3 4 5
Sum: 15

Tips for completing the assignment:

• In the same way as in the previous assignment, consider first what is a trivial case and how to divide the problem into a smaller instance of the same problem (or alternatively, you can consider these things in opposite order).