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POJava factorial output
 

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  1. POJava factorial output
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    <p>I am supposed to create a program that asks the user for a number and takes the factorial of that number then asks if they want to do another factorial (Y,N).</p> <p>It is supposed to work like this:</p> <ul> <li>Enter a number to take the factorial of: 4</li> <li>4! = 24</li> <li>Do another factorial (Y,N)? Y</li> <li>Repeat until N is entered</li> </ul> <p>My output is like:</p> <ul> <li>Enter a number to take the factorial of: </li> <li>"Do another factorial? (Y,N)?"</li> <li><p>4! = 1 regardless of whether I enter Y or N.</p> <p>Here's my code:</p> <pre><code>import java.util.Scanner; public class factorial { public static void main ( String [] args ) { Scanner input = new Scanner(System.in); System.out.print("Enter a number you want to take the factorial of: "); int num = input.nextInt(); int fact = 1; System.out.printf("%d! = %d\n ", num, fact, Factorial(num, fact)); } public static int Factorial(int num, int fact) { Scanner input = new Scanner(System.in); char foo; System.out.print("Do another factorial (Y,N)?"); foo = input.next().charAt(0); for (int i = 1; i &gt;= num; i++) { fact *= i; if (foo == 'Y') { System.out.print("Do another factorial (Y,N)?"); foo = input.next().charAt(0); continue; } else { break; } } return fact; } } </code></pre></li> </ul> <p>After the change:</p> <pre><code>import java.util.Scanner; public class factorial { public static void main ( String [] args ) { Scanner input = new Scanner(System.in); System.out.print("Enter a number you want to take the factorial of: "); int num = input.nextInt(); int fact = 1; System.out.printf("%d! = %d\n ", num, Factorial(num, fact)); System.out.print("Do another factorial (Y,N)? "); char foo = input.next().charAt(0); while (foo != 'N') { System.out.print("Do another factorial (Y,N)? "); foo = input.next().charAt(0); System.out.print("Enter a number you want to take the factorial of: "); num = input.nextInt(); System.out.printf("%d! = %d\n", num, Factorial(num, fact)); } } public static int Factorial(int num, int fact) { for (int i = 1; i &lt;= num; i++) { fact *= i; } return fact; } </code></pre> <p>}</p> <p>Output still has some problems:</p> <ul> <li>Enter a number to take the factorial of: 4</li> <li>4! = 24</li> <li>Do another factorial (Y,N)? Y</li> <li>Do another factorial (Y,N)? Y</li> <li>Enter a number to take the factorial of: 4</li> <li>4! = 24</li> <li>Do another factorial (Y,N)? N</li> <li>Enter a number to take the factorial of: </li> </ul>
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