This example demonstrates how to use the `end` function to get an iterator pointing to the last character in the string, and then move it back one character using the pre-decrement operator `--`. The output will be the character 'd'. Package library: Standard Library. Example 2:c++ std::wstring str = L"Hello World"; auto it = std::find(str.begin(), str.end(), L'o'); if (it != str.end()) { std::wcout << L"Found at position " << (it - str.begin()) << std::endl; } else { std::wcout << L"Not found" << std::endl; } ``` This example demonstrates how to use the `end` function with `std::find` algorithm to search for a specific character in the string. If the character is found, the program will output its position in the string. If not, it will output "Not found". Package library: Standard Library.