Tally Class with a unique_ptr Member

Write a class named Tally that keeps its running total in an int on the heap, owned by a private std::unique_ptr<int> member. Give it:
- Tally(int start) — allocates the heap int with make_unique and stores start in it.
- void add(int n) — adds n to the owned total.
- int value() const — returns the owned total.

Do NOT write a destructor, do NOT write new or delete, and do NOT write a main function — the tests provide one. The test reads a starting total and a step, then prints the total three times: as built, after one add, and after a second add.

For the input 5 3 the program prints exactly the output shown in Expected Output.

Expected Output:

start: 5↵
after one: 8↵
after two: 11↵

= newline. The output ends with a newline — print one after the last line.

Hints4 available

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Pointers

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