/* Contributed by Nicola Pero - Thu Mar 8 16:27:46 CET 2001 */ #include #include /* Test method with variable number of arguments */ @interface MathClass { Class isa; } /* sum positive numbers; -1 ends the list */ + (int) sum: (int)firstNumber, ...; @end @implementation MathClass + (int) sum: (int)firstNumber, ... { va_list ap; int sum = 0, number = 0; va_start (ap, firstNumber); number = firstNumber; while (number >= 0) { sum += number; number = va_arg (ap, int); } va_end (ap); return sum; } + initialize { return self; } @end int main (void) { if ([MathClass sum: 1, 2, 3, 4, 5, -1] != 15) { abort (); } return 0; }