In mathematics, the notation n! represents the factorial of the nonnegative inte

Question

In mathematics, the notation n! represents the factorial of the nonnegative integer n. The factorial of n is the product of all the nonnegative integers from 1 through n.

For example,

7! = 1 x 2 x 3 x 4 x 5 x 6 x 7 = 5,040

and

4! = 1 x 2 x 3 x 4 = 23

Create an application that lets the user enter a nonnegative integer and then uses a loop to calculate the factorial of that number. Display the factorial in a label or a message box.

- Have title in the form.
- Have Try.. Catch block in your program.
- Have Accept and Cancel Buttons.
- Assign Keyboard Access keys to Buttons.

Explanation / Answer

int Factorial(int input) { int answer = 0; if (input > 0) { count = 1; while (count <= input) { if (count == 1) { answer= 1; count++; } else { answer = count * answer; count++; } } } else { MessageBox.Show("Please enter only a positive integer."); } return answer; }

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