Trim Spaces From Both Ends

Write the function string trim(const string& text) so it returns text with every space and tab removed from the START and the END only. Spaces inside the text stay where they are, and a string that is nothing but spaces becomes the empty string.

find_first_not_of(" \t") gives the index of the first real character (or string::npos when there is none) and find_last_not_of(" \t") the index of the last one; erase can then cut from the front and from the back.

The hidden driver reads every line of input with getline and prints each trimmed result between square brackets on its own line, so for the three lines    Red Kite  , a tab-wrapped Paper Boat and No Change it prints the output shown in Expected Output.

Do NOT write a main function.