C++ Taskbook Level 4.7
Given an array of integers:
int arr = [123, 456, 789];
Check that it contains a number that contains the digit 3.
Given an array of strings containing integers as strings:
std::string arr[] = ["1", "2", "3", "4", "5"];
Find the sum of the elements of this array.
Given a string:
"AbCdE"
Change the case of the letters in this line to the opposite. In our case, it should look like this:
"aBcDe"
Write a program that will generate the following string:
"-1-2-3-4-5-"
The date is given in the following format:
std::string date = "31-12-2025";
Convert it to the following format:
std::string date = "31 December 2025";
