class GFG { /* function to multiply two numbers x and y*/ static int multiply(int x, int y) { /* 0 multiplied with anything gives 0 */ if (y == 0) return 0; /* Add x one by one */ if (y > 0) return (x + multiply(x, y - 1)); /* the case where y is negative */ if (y < 0) return -multiply(x, -y); return -1; } // Driver code public static void main(String[] args) { System.out.print("\n" + multiply(5, -11)); } }