showfact.c

  #include <stdio.h>

int factorial(int value)
 {
   printf("In factorial with the value %d/n", value);

   if (value == 1)
    {
      printf("Returning the value 1/n");
      return(1);
    }
   else
    {
      printf("Returning %d * factorial(%d)/n",
         value, value-1);
      return(value * factorial(value-1));
    }
 }

void main(void)
 {
   printf("The factorial of 4 is %d/n", factorial(4));
 }