It should be done in c++

Problem 4. (30 points) You are given an array of strings where the array already contains one word per entry. This means each entry only contains lowercase and uppercase letters from the English alphabet. Your task is to write functions that take in the array as the parameter that do the following: c) (10 points) Declare an output file stream and use it to write the entire array in reverse into the file. So for example, if the array contains two entires, words "apple" and "banana", then you should write out "ananab elppa". Entries should be separated with a single space in the file