C++ Taskbook Level 2.1
Given an array of integers:
int arr[] = {1, 2, 3, 4, 5};
Print to the console the number of elements in this array.
Given an array of integers:
int arr[] = {1, 2, 3, 4, 5};
Print the elements of this array to the console.
Given an array of strings:
std::string arr[] = {"123", "456", "789"};
Print the first characters of each element of this array to the console.
Given some integer:
int num = 12345;
Find the sum of all its even digits.
Given some integer:
unsigned int num = 12;
Find the factorial of this number.
