C++ Taskbook Level 2.1

Задание 1

Given an array of integers:

cppint arr[] = {1, 2, 3, 4, 5};

Print to the console the number of elements in this array.

Задание 2

Given an array of integers:

cppint arr[] = {1, 2, 3, 4, 5};

Print the elements of this array to the console.

Задание 3

Given an array of strings:

cppstd::string arr[] = {"123", "456", "789"};

Print the first characters of each element of this array to the console.

Задание 4

Given some integer:

cppint num = 12345;

Find the sum of all its even digits.

Задание 5

Given some integer:

cppunsigned int num = 12;

Find the factorial of this number.