// Homework #?
// Problem 2.45
// The factorial function is used frequently in probability problems. The
// factorial of a positive integer n (written n! and pronounced "n factorial"
// is equal to the product of the positive integers from 1 to n. Write a
// program that evaluates the factorials of the integers from 1 to 5. Print
// the results in tabular format. What difficulty might prevent you from
// calculating the factorial of 20?

#include <iostream.h>

main()
	{
	int factorial;

	cout << "X\tFactorial of X\n";

	for( int i=1; i<=5; i++)
		{
		factorial = 1;
		for (int j=1; j<=i; j++)
			{
			factorial *=j;
			}
		cout << i << '\t' << factorial << endl;
		}

	return 0;
	}

// Output for Problem 2.45

X       Factorial of X
1       1
2       2
3       6
4       24
5       120