ch3/exercises/ex2.c

   1 /*factorial of a given number*/
   2
   3
   4 #include<stdio.h>
   5
   6 int main()
   7 {
   8   int num;
   9   int i;
  10   long fact;
  11   printf("Enter a number:");
  12   scanf("%d",&num);
  13
  14   i=1;
  15   fact = 1;
  16   while(i<=num)
  17     {
  18       fact = fact*i;
  19       i++;
  20     }
  21   printf("The factorial is %ld\n",fact);
  22   printf("Bye\n");
  23   return 0;
  24 }