This document outlines 5 problems for a homework assignment on input/output (I/O) and arrays in C++. Problem 1 involves reading a data file and calculating the median and quartiles. Problem 2 calculates the average and standard deviation of numbers in a file. Problem 3 merges two sorted files of numbers into a third file. Problem 4 performs hexadecimal addition with overflow checking. Problem 5 defines a function to remove repeated characters from a partially filled array.