17.10 The expression 4 evaluates to (A) 12, (B) 32, (C) 64, (D) 81. The arguments to a function using a variable number of arguments is stored in the list (A) valist, (B) va_list, (C) va_args, (D)...

17.10 The expression 4 <>evaluates to (A) 12, (B) 32, (C) 64, (D) 81.

The arguments to a function using a variable number of arguments is stored in the list

(A) valist, (B) va_list, (C) va_args, (D) none of these.

Compare the features of named constants and variables and list the circumstances when you

would use one in preference to the other.