c++

Given a 2d array that is a 4x4 array. I need a function that takes a 2d array. Then asks the user for a row and collumn. This is a sliding game where if I choose row 2 and collum 1. First it will check if it is zero. If it is zero repromt the user for another row and collumn. If the point is a one it will search for a zero that is above, below, left or right and swap with it. It will not swap diagonally. If a zero is no where to be found around the point repromt the user for a row and collumn.

*Please ask if you have questions *Try to not use built in functions and keep it simple for a newer programmer to understand.

int swap(int array) above is the function header example array: [[1,1,1,1], [1,0,1,1], [1,1,1,1], [1,1,1,1]]

user chooses 2 1

updated array [1,1,1,1], [0,1,1,1], [1,1,1,1], [1,1,1,1]]