/* Program allows the user to input the length and width for
a multiplication table and then displays one. However, the user cannot
input more than 15 rows. */

#include <iostream> // cout, cin, endl
#include <iomanip> // setw, setprecision, align right
#include <cstdlib> // system pause
using namespace std;

int main()
{
	// declare variables and constants
	int rows; // horizontal (width) of multiple table
	int cols; // vertial (length) of multiplication table

	// Prompt user for input
	// accept input from user. Accepts the width first and then length.
	cout << "Input the length and then the width of the multiplication table" << endl;
		do{
			cout << "Table cannot be bigger than 15 x 15 or less than 1 x 1. " << endl;
			cin >> cols >> rows;

				if(cols < 1 || rows < 1)
				{
					cout << "Error: cannot enter 0 units for table length or width." << endl;
				}
		} while(cols > 15 || rows > 15);

	// Output the table using for loops, one nested in the other.

	cout << right; // Aligns everything to the right.
		for (int i = 1; i <= rows; i++)
		{
			for(int j = 1; j <= cols; j++)
			{
				cout << setw(4) << i * j; // sets the width of 4 between each i*j
			}
			cout << endl; // After each iteration of the nested loop, it will go to a new line.
		}


	// Exit the program
	system("pause");
	return 0;
}