Do that abbove using C++ and classes and functions

A txt file has a data in rows and cols, cols may not be of same size. Read the data from the file and create a two-dimensional array for storing this data. For each task create separate function. After reading the data to the array perform the following tasks. 1. Swap the rows after asking the user and store the array again 111 the same file 2. Reverse the array from last to top 3. Sort the array such that the row having minimum number of columns at the top and maximum number of column at the last