Need Help with 2D arrays and functions

[2kaud]

int rows = atoi(argv[2]);
int cols = atoi(argv[4]);

What happens if argc < 5? You haven't tested for the error conditions mentioned in the assignment.

Your fillArray sets the initial values. But your showArray also sets values in the array! Shouldn't showArray just show the values and not also change values?

tmpfile.getline(line, 10, ' ');

This will read a line from the file stream associated with tmpfile. But you don't open a file anywhere! From where did you get this code for find_greatest_product? Its based upon a 20x20 array read from a file - whereas for your program the size of the array is entered on the command line and fillArray sets the values of the array rather than reading from a file! You need to get rid of this code that reads from a file and change the loop conditions to refer to the rows and cols variables passed to the function as indicated in Paul's post.

where to insert cout statements so that the function will output the max product based on the user input?

When the function has finally calculated the maximum value!