Question

I’m using Visual C++ 2010 Express Edition. I declared an integer array capable of holding 50 elements. Depending on how many entries the user gives, each of those entries will be stored as a separate element in the array. I want to add up all these unknown elements and print the answer to the console. Is it possible to do this, and how?

Answer 1

You’re looking for std::accumulate() from header <numeric>:

std::cout << std::accumulate(std::begin(arr), std::end(arr), 0);

If the user gives less then 50 elements then you need to account for that:

std::cout << std::accumulate(std::begin(arr), arr + element_count, 0);