/*********************************************************
 * From C PROGRAMMING: A MODERN APPROACH, 1st Edition    *
 * By K. N. King                                         *
 * Section 9.1, pages 157-158.                           *
 *********************************************************/

#include <stdio.h>

/* The following function does not return any value. 
   For this reason it has type "void". It takes one argument of type integer.
*/
void counting(int a)
{
	printf("This is iteration number %d\n", a);
}


int main( void )
{
int i;

	/* The following examples repeatedly call a function counting(a) that
	   has no return value. For this reason, function call is a program
	   statement followed by ";". In this case, it is not an arithmetical expression. 
	*/
	
	/* Example 1 */
	for(i=0; i < 11; i++)
	{
	/* call function only for even numbered iterations */
	if ( i%2 == 0)
		counting( i );
	}
	printf("\n");

	/* Example 2 */
	for(i=10; i > 0; i--)
	{
	/* since this loop counts down from 10 to 0, argument is (10 - i)*/
	counting( 10 - i );
	}
	
return( 0 );
}