ObjectiveMcq
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In LISP, symbol represents a _____
Data type
Data type and data object
Data structure
Any of Data type, data object and data structure
In LISP programming, Symbols can be considered all of these. Mostly these are known as data objects and sometimes are also known as data structures or data types.
What is the use of (WRITE 'Argument)?
It converts argument in small letters to capital letters
It returns capital letters from the string
Same as (write 'argument)
It converts the string into alphabetical order/sequence
It works same as (write 'argument) because LISP is case insensitive language.
Is LISP a case sensitive language.
Yes
No
LISP is not a case sensitive language. Example: (print 'a) will behave same as (PRINT 'A).
Which of the following can be considered as List?
Number
T
NIL
Empty
An empty thing is also considered as List. Empty thing means the braces () with no arguments. Numbers are not counted in Lists.
What are examples of some of the atoms?
Numeric, Integer, Ratio
Numeric, Lists
Lists
Cons of two atoms
Atoms consist of Literals, Numbers, Integers, Ratios, Flonum. Lists are formed from atoms. Cons of two atoms is referred to as List.
If S1, S2, S3... are S-expressions then list: (S1 S2 S3 ....) is a/an ____
Atom
Error will occur
S-expression
Primitive
According to recursive definition of S-expression if S1, S2, S3... are S-expressions then list: (S1 S2 S3 ....) is also an S-expression. S-expression is short form of symbolic expressions.
Integerp and Zerop will be same __
When argument is not an integer or equal to 0
When argument is not equal to 0
When argument is a negative integer
When argument is a negative integer and not 0
Both integerp and zerop will be same when both will show either T or NIL. Both will show T when argument is 0 and NIL when argument is not an integer.
What is the use of zerop?
To check object is zero
To check object is NIL
To make non-zero object to zero
It is same as integerp
It is the predicate used to check whether the argument is zero or not. It will show T (true) only if the argument is numeric zero, that is, 0 and NIL in all other cases.
Which among these are the data type predicates?
atom
symbolp
listp & numberp
atom, symbol, listp & numberp
Atom, symbolp, listp, numberp all are considered as data type predicates. Atom is used check if an argument is atom or not. Similarly, symbolp is used to check symbols, listp to check lists and numberp to check whether the argument is a number or not.
Which of the following is used by member primitive to compare arguments?
=
equalp
equal
eql
Eql is used by member argument to compare between its two arguments. Eql is one of the equality predicates and is used to test for numbers and symbols of the same type.
Setf refers to set field?
Yes
No
The full form of setf is set field and it means that it sets the field with the value given.
In multiple arguments in setf and setq, it prints ____
All the values
Only the first value
Only the last value
Numerically smallest value
In the process of assigning values to multiple variables with setf and setq, the setf and setq prints only the last value assigned to a variable. It does not print all the values.
How many arguments do setf or setq can have in single braces?
2
4
28
Any even number of arguments.
The setf and setq takes any number of arguments but the number must be even. Even is required because one of the two will be value taker and another one will be value giver. So, it always comes in a pair.
Choose the correct about Setf and Setq.
Setq can be used in place of setf but not vice versa
Setf can be used in place of setq but not vice versa
Both can be used in place of each other
Neither can be used in place of each other
Setq is used only for symbols and setf is used for any data type, so Setf can be used in place of setq but setq cannot be used in place of setf.
What is the difference between setf and setq?
Setq is used for symbols only but setf can be used anywhere
No difference is there
Setf is used only for numbers but setq used anywhere
Setf is for lists and setq for numbers
Setq is used only for setting the values of symbols but setf can be used for anything. Setf can be used for setting value of any data-type and not only symbols.
What is the output of (/ 6 3) and (- 6 4)?
2 2
1/2 2
2 -2
1/2 -2
Syntax of the LISP takes prefix expressions. So, 6/3=2 and 6-4=2 will be the outputs of the following statements.
Output: 2,2
Are arithmetic operators primitives in LISP?
True
False
Yes, the arithmetic operators are primitives in LISP programming language. For example: in (/ 3 3) / is a primitive.
Which primitive can be used to add an element to List?
delete
cons
cdr
write
Cons is the primitive used to add an element to list. Cons take two lists as an argument and merge them to form a new list.
Which primitive can be used to remove an element from List?
delete
cons
cdr
write
Delete is the primitive used to remove an element from list. The element to be removed is passed as an argument to delete primitive along with the list name from which element is to be deleted and delete will remove that element from list.
