Please write in C++ and briefly explain the syntax of the function please.

Problem 4 Write a function to return the last index at which a character is used in a string. Your function should take two parameters in this order: a char parameter an string parameter o o Your function should return the last index at which the character occurs in the string. Your function should not print anything. Your function MUST be named getLastlndex . Examples: ."o", "lollipop"->in 0 4 "p", "mississippi" ->index 9 10