Arrays are very dangerous data types for many reasons, one of which is that they don't have an at method like vectors that raises an exception if an improper index is used. write a function named "safe_at" that takes an array and an index and returns a reference to the element (at that index) in the array. the array can be of any type, and the index is a size_t. if the index is greater or equal to the size of the array, raise a std: : out_of_range exception.

input:

#include
int arr_1[] {1, 7, 9, 3, 67};
assert_eq(safe_at(arr_1, 0), 1);
assert_eq(safe_at(arr_1, 4), 67);
assert_throw(safe_at(arr_1, 5), std: : out_of_range);
assert_throw(safe_at(arr_1, -1), std: : out_of_range);
assert_eq(safe_at(arr_1, 2), 9);

What is the largest decimal number that can be represented by a binary number with 4 place values? (remember, each place in a binary number has a value of a power of 2, starting in the ones place with 20.)

Auniversity wants to install a client-server network. which feature do you think is important for them as they set up the network? sending email blocking multiple people to use the same file low security low set up cost limited access to files

Creating "smart interfaces" in all sectors of industry, government, and the public arena is one of the fastest growing hct areas. these interfaces model, interpret, and analyze such human characteristics as speech, gesture, and vision. the field of biometrics, in which humans authenticate themselves to machines, is an area of considerable interest to hct practitioners. fingerprint scans are one of the most frequently used biometric options, and this article, biometric student identification: practical solutions for accountability & security in schools, makes a case for the implementation of fingerprint scans in schools. critique the article, and answer the following questions: according to the author, what are the main benefits of adopting fingerprint scans in schools for student identification? according to the author, what are the main drawbacks of adopting fingerprint scans in schools for student identification? do you agree with the author's assessment of the pl