reference/C/EXAMPLES/fact1.c


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/**************************************************************************
 *
 * Purpose: generate the factorial of a number by iteration.
 * Author:  M. J. Leslie
 * Date:    09-Apr-94
 *
 **************************************************************************/

#include <stdio.h>

int factorial(int num);

main()
{
  int num;
  puts  ("This program will return the factorial of a number.");
  printf("Please enter the number ==> " );
  scanf("%d", &num);

  printf(" %d! is %d\n",num, factorial(num) );
}

int factorial(int num)
{
  int count, ans=1;
  for (count=1 ; count <= num; count++ ) ans *= count;
  return ans;
}