Point out the error in the following program. #include #include void varfun(int n, ...); int main() { varfun(3, 7, -11, 0); return 0; } void varfun(int n, ...) { va_list ptr; int num; num = va_arg(ptr, int); printf("%d", num); }

• Error: ptr has to be set at begining
• Error: ptr must be type of va_list
• Error: invalid access to list member
• No error