c++ for_each() and object functions

Question

I have an assignment that is the following:

For a given integer array, find the sum of its elements and print out the final result, but to get the sum, you need to e

Answer 1

In this line:

vector v(array[0], array[10]);

You've indexed out of bounds of your array. This causes undefined behavior.

Also, the constructor for vector you used doesn't do what you think. You've used:

vector(initial value, count);