WAP to calculate x = (b-1)! - (b-2)!....-(b-a)!

• import java.util.Scanner;
  
  class Factorial
  {
  public static void main(String args[])
  {
  int a, c, fact = 1;
  
  System.out.println("Enter an integer to calculate it's factorial");
  Scanner in = new Scanner(System.in);
  
  a = in.nextInt();
  
  if ( a < 0 )
  System.out.println("Number should be non-negative.");
  else
  {
  for ( c = 1 ; c
• 10 years agoHelpfull: Yes(2) No(1)
• int main()
  { int i,num,fact;
  scanf("%d",&num);
  fact=1;
  if(num==0)
  { fact=1; }
  else {
  for(i=1;i
• 10 years agoHelpfull: Yes(1) No(0)
• class sFact
  { void fact(int b)
  { int f=1,i,j,y=0 ;
  
  
  for(j=b-1;j>=1;j--)
  {
  f = 1;
  for(i=j;i>=1;i--)
  {
  f = f*i;
  }
  
  y = y-f ;
  if (y
• 10 years agoHelpfull: Yes(0) No(0)