/* File: iseven.c
 * --------------
 * This program prints a list of the even numbers
 * between 1 and 10.  In an ideal implementation, 
 * constants would be used for the limits, but 
 * this program is designed to match the program 
 * example in the text.
 */

#include <stdio.h>
#include "genlib.h"

/* Function prototypes */
bool IsEven(int n);

/* Main program */
main() {
    int i;

    for (i = 1; i <= 10; i++) {
        if (IsEven(i)) printf("%2d\n", i);
    }
}

/* Function: IsEven
 * Usage: if (IsEven(n)) . . .
 * ---------------------------
 * Returns TRUE if n is even.
 */
bool IsEven(int n) {

    return (n % 2 == 0);
}