The postix of 3 is the last 3 characters of a string. Given a string input, output the last three characters of that string Assume the string will always have at least three characters. Hint Use the string method substr() Ex. If the input is: chicken the output is Postfix: ken \begin{tabular}{l|l} LAD \\ Activitr & 41711 LAB: Postfix of 3 \end{tabular} 2,10 main.cpp Load default template.. 1 include / Type your code here % return o