/* First constructor
 */
Breuk (int t, int n) {
        teller = t; noemer = n;
        if (n < 0) {
           teller = teller * (-1);
           noemer = noemer * (-1);
        }

/* Fraction simplification
 */

        int ggd = ggd();
        if (gcd > 1) {
            this.teller = this.teller / gcd;
            this.noemer = this.noemer / gcd;
        }
    }

/* Second constructor denominator is 1
 */
        Breuk (int t) {
        teller = t;
        noemer n = 1;
        new Breuk = Breuk();
    }
/* Third constructor numerator is 0
 */
        Breuk() {
        teller t = 0;
        new Breuk = Breuk();