Online C Programming Quizzes

**Army1987** · Oct 6 '07, 08:15 AM

Re: Online C Programming Quizzes

On Sat, 06 Oct 2007 00:22:53 -0700, Dexter wrote:

My site is home to series of quizzes ranging from Accounting,
Business, Math to programming languages. These are multiple choice
type questions and you get a score card at end.
>
For C language, I have 3 set of quizzes that anyone is welcome to try
online for free.
Questions on C quizzes are rather easy to solve for Professional C
programmers yet for those who are taking C as a first programming
course will find these useful in assesment their C
knowledge
>
>
Visit http://www.thinkanddone.com/exams/main.aspx

I found something wrong already at the first level.
Question 3 is:
3 . Its given that variable x has been assigned a value of 5, which of the following statement will output the message "I am quite right"
if (x!=5) printf("I am quite right");
if (x=5) printf("I am quite right");
both statements will display the message
none of the above
The second statement will assign 5 to x (which happens to already
have that value, but that's irrelevant) and, since the result of
that assignment can never be zero, it will execute the expression
statement consisting of the printf call. So I checked the second
answer, but the test believes the correct answer to be "none of
the above".

--
Army1987 (Replace "NOSPAM" with "email")
A hamburger is better than nothing.
Nothing is better than eternal happiness.
Therefore, a hamburger is better than eternal happiness.

**borophyll@gmail.com** · Oct 6 '07, 08:25 AM

Re: Online C Programming Quizzes

On Oct 6, 5:22 pm, Dexter <yousaf.a...@gm ail.comwrote:

My site is home to series of quizzes ranging from Accounting,
Business, Math to programming languages. These are multiple choice
type questions and you get a score card at end.
>
For C language, I have 3 set of quizzes that anyone is welcome to try
online for free.
Questions on C quizzes are rather easy to solve for Professional C
programmers yet for those who are taking C as a first programming
course will find these useful in assesment their C
knowledge
>
Visithttp://www.thinkanddon e.com/exams/main.aspx
>
Regards
>
Asad S. Yousaf

Some of the questions could be better worded, and some of the
questions are just plain wrong.

--------------
Dataset 1
--------------

Question 1 states: A C program is a collection of ______________
(a) arrays
(b) variables
(c) functions
(d) data types

Neither of these answers are correct, though you state that (c) is the
answer. A C program is more than a collection of functions. What
about object declarations? Type declarations? The correct answer
should be "declaratio ns".

Question 3 states: Its given that variable x has been assigned a value
of 5, which of the following statement will output the message "I am
quite right"

(a) if (x!=5) printf("I am quite right");
(b) if (x=5) printf("I am quite right");
(c) both statements will display the message
(d) none of the above

You give answer (d) as the correct answer, when in fact the correct
answer is (b). Remember, assignment expressions have a value too...

Question 6: I don't like the wording of this question. The term
"assignment " here I think is not really correct

---------------
Dataset 2
---------------

Question 1: This may just be a language barrier issue, but
"alphabets" should be "letters"

Question 5: I'm not sure that you should be so dogmatic about the use
of infinite loops. They should not be used if you can avoid them, but
I know Linux uses them a lot. Perhaps there are cases where you need
to use them...

Question 8: This may be bit-picking, but my interpretation of the
Standard is that void actually *is* a value, but it is an empty value
that cannot be used. I would be interested to know why this
description was used. Why not just say void means "returning no value"

Question 9: Sorry, your answer is wrong. You declare an array of 10
characters. You can fit 10 characters in it. The answer is not 9.
There is no rule that the last element of an array of char must be a
null character. And even if there was, the null character is *still*
a character!

--------------
Dataset 3
--------------

Question 2: Replace the word "commands" with "directives "

Question 3: Where is the condition contained in round brackets?

Question 6: Answer (d) is correct, not answer (c)

Question 7: Answer (c) is given as correct, but goto is not a loop
statement

Question 8: A function *always* returns one value. Just because it
is a pointer does not mean that it returns *many* values

Question 9: All arguments are pass by value

Question 10: 12 bytes is incorrect. The value is implementation
defined, because a structure may have any amount of padding between
its members or following the last member.

Regards,
B.

**pete** · Oct 6 '07, 08:45 AM

Re: Online C Programming Quizzes

borophyll@gmail .com wrote:

Question 8: This may be bit-picking, but my interpretation of the
Standard is that void actually *is* a value, but it is an empty value
that cannot be used.

An expression of type void has a nonexistent value,
which to my way of thinking,
means that expressions of type void don't have values.

N869
6.3.2.2 void
[#1] The (nonexistent) value of a void expression (an
expression that has type void) shall not be used in any way,
and implicit or explicit conversions (except to void) shall
not be applied to such an expression.

--
pete

**pete** · Oct 6 '07, 08:55 AM

Re: Online C Programming Quizzes

borophyll@gmail .com wrote:

>
On Oct 6, 5:22 pm, Dexter <yousaf.a...@gm ail.comwrote:

Visithttp://www.thinkanddon e.com/exams/main.aspx

Some of the questions could be better worded, and some of the
questions are just plain wrong.
>
--------------
Dataset 1
--------------
>
Question 1 states: A C program is a collection of ______________
(a) arrays
(b) variables
(c) functions
(d) data types
>
Neither of these answers are correct, though you state that (c) is the
answer. A C program is more than a collection of functions. What
about object declarations? Type declarations? The correct answer
should be "declaratio ns".

External declarations.

A C program consists of:
1 preprocessor directives
2 comments
3 external declarations
4 extra white space

--
pete

**borophyll@gmail.com** · Oct 6 '07, 09:45 AM

Re: Online C Programming Quizzes

On Oct 6, 6:43 pm, pete <pfil...@mindsp ring.comwrote:

boroph...@gmail .com wrote:

Question 8: This may be bit-picking, but my interpretation of the
Standard is that void actually *is* a value, but it is an empty value
that cannot be used.

>
An expression of type void has a nonexistent value,
which to my way of thinking,
means that expressions of type void don't have values.
>
N869
6.3.2.2 void
[#1] The (nonexistent) value of a void expression (an
expression that has type void) shall not be used in any way,
and implicit or explicit conversions (except to void) shall
not be applied to such an expression.
>
--
pete

Agreed, I was too lazy to look it up properly

**Flash Gordon** · Oct 6 '07, 10:05 AM

Re: Online C Programming Quizzes

pete wrote, On 06/10/07 09:47:

borophyll@gmail .com wrote:

>On Oct 6, 5:22 pm, Dexter <yousaf.a...@gm ail.comwrote:

>

>>Visithttp://www.thinkanddon e.com/exams/main.aspx

>

>Some of the questions could be better worded, and some of the
>questions are just plain wrong.
>>
>--------------
>Dataset 1
>--------------
>>
>Question 1 states: A C program is a collection of ______________
>(a) arrays
>(b) variables
>(c) functions
>(d) data types
>>
>Neither of these answers are correct, though you state that (c) is the
>answer. A C program is more than a collection of functions. What
>about object declarations? Type declarations? The correct answer
>should be "declaratio ns".

>
External declarations.
>
A C program consists of:
1 preprocessor directives
2 comments
3 external declarations
4 extra white space

To get a C program you need at least one definition (although a
definition is of course also a declaration). If your are including
comments in your list, then why not statements?
--
Flash Gordon

**pete** · Oct 6 '07, 10:25 AM

Re: Online C Programming Quizzes

Flash Gordon wrote:

>
pete wrote, On 06/10/07 09:47:

borophyll@gmail .com wrote:

On Oct 6, 5:22 pm, Dexter <yousaf.a...@gm ail.comwrote:

>Visithttp://www.thinkanddon e.com/exams/main.aspx

Some of the questions could be better worded, and some of the
questions are just plain wrong.
>
--------------
Dataset 1
--------------
>
Question 1 states: A C program is a collection of ______________
(a) arrays
(b) variables
(c) functions
(d) data types
>
Neither of these answers are correct, though you state that (c) is the
answer. A C program is more than a collection of functions. What
about object declarations? Type declarations? The correct answer
should be "declaratio ns".

External declarations.

A C program consists of:
1 preprocessor directives
2 comments
3 external declarations
4 extra white space

>
To get a C program you need at least one definition (although a
definition is of course also a declaration). If your are including
comments in your list, then why not statements?

Because statments are part of function definitions
and function definitions are external declarations.

--
pete

**pete** · Oct 6 '07, 10:35 AM

Re: Online C Programming Quizzes

pete wrote:

>
Flash Gordon wrote:

pete wrote, On 06/10/07 09:47:

borophyll@gmail .com wrote:
>On Oct 6, 5:22 pm, Dexter <yousaf.a...@gm ail.comwrote:
>
>>Visithttp://www.thinkanddon e.com/exams/main.aspx
>
>Some of the questions could be better worded, and some of the
>questions are just plain wrong.
>>
>--------------
>Dataset 1
>--------------
>>
>Question 1 states: A C program is a collection of ______________
>(a) arrays
>(b) variables
>(c) functions
>(d) data types
>>
>Neither of these answers are correct,
>though you state that (c) is the
>answer. A C program is more than
>a collection of functions. What
>about object declarations? Type declarations?
>The correct answer should be "declaratio ns".
>
External declarations.
>
A C program consists of:
1 preprocessor directives
2 comments
3 external declarations
4 extra white space

To get a C program you need at least one definition (although a
definition is of course also a declaration). If your are including
comments in your list, then why not statements?

>
Because statments are part of function definitions
and function definitions are external declarations.

N869

6.9 External definitions

[#4] As discussed in 5.1.1.1, the unit of program text after
preprocessing is a translation unit, which consists of a
sequence of external declarations.

--
pete

**borophyll@gmail.com** · Oct 6 '07, 10:35 AM

Re: Online C Programming Quizzes

On Oct 6, 8:27 pm, pete <pfil...@mindsp ring.comwrote:

pete wrote:
>

Flash Gordon wrote:

>

pete wrote, On 06/10/07 09:47:
boroph...@gmail .com wrote:
On Oct 6, 5:22 pm, Dexter <yousaf.a...@gm ail.comwrote:

>

>Visithttp://www.thinkanddon e.com/exams/main.aspx

>

Some of the questions could be better worded, and some of the
questions are just plain wrong.

>

--------------
Dataset 1
--------------

>

Question 1 states: A C program is a collection of ______________
(a) arrays
(b) variables
(c) functions
(d) data types

>

Neither of these answers are correct,
though you state that (c) is the
answer. A C program is more than
a collection of functions. What
about object declarations? Type declarations?
The correct answer should be "declaratio ns".

>

External declarations.

>

A C program consists of:
1 preprocessor directives
2 comments
3 external declarations
4 extra white space

>

To get a C program you need at least one definition (although a
definition is of course also a declaration). If your are including
comments in your list, then why not statements?

>

Because statments are part of function definitions
and function definitions are external declarations.

>
N869
>
6.9 External definitions
>
[#4] As discussed in 5.1.1.1, the unit of program text after
preprocessing is a translation unit, which consists of a
sequence of external declarations.
>
--
pete

The question would need to be qualified as "preprocess ed C program"
for it to be precise

Regards,
B.

**Dexter** · Oct 6 '07, 12:45 PM

Re: Online C Programming Quizzes

On Oct 6, 1:10 pm, Army1987 <army1...@NOSPA M.itwrote:

On Sat, 06 Oct 2007 00:22:53 -0700, Dexter wrote:

My site is home to series of quizzes ranging from Accounting,
Business, Math to programming languages. These are multiple choice
type questions and you get a score card at end.

>

For C language, I have 3 set of quizzes that anyone is welcome to try
online for free.
Questions on C quizzes are rather easy to solve for Professional C
programmers yet for those who are taking C as a first programming
course will find these useful in assesment their C
knowledge

>

Visithttp://www.thinkanddon e.com/exams/main.aspx

>
I found something wrong already at the first level.
Question 3 is:
3 . Its given that variable x has been assigned a value of 5, which of the following statement will output the message "I am quite right"
if (x!=5) printf("I am quite right");
if (x=5) printf("I am quite right");
both statements will display the message
none of the above
The second statement will assign 5 to x (which happens to already
have that value, but that's irrelevant) and, since the result of
that assignment can never be zero, it will execute the expression
statement consisting of the printf call. So I checked the second
answer, but the test believes the correct answer to be "none of
the above".
>
--
Army1987 (Replace "NOSPAM" with "email")
A hamburger is better than nothing.
Nothing is better than eternal happiness.
Therefore, a hamburger is better than eternal happiness.

I made errors when compiling the examset. Many thanks for your insight
into C topics

I have reloaded DataSet1 with error proned question replaced with new
ones.

DataSet2 and Dataset3 have been unloaded and will be corrected and
reloaded later this afternoon

**Army1987** · Oct 6 '07, 01:55 PM

Re: Online C Programming Quizzes

On Sat, 06 Oct 2007 05:44:06 -0700, Dexter wrote:

On Oct 6, 1:10 pm, Army1987 <army1...@NOSPA M.itwrote:

>On Sat, 06 Oct 2007 00:22:53 -0700, Dexter wrote:

My site is home to series of quizzes ranging from Accounting,
Business, Math to programming languages. These are multiple choice
type questions and you get a score card at end.

>>

For C language, I have 3 set of quizzes that anyone is welcome to try
online for free.
Questions on C quizzes are rather easy to solve for Professional C
programmers yet for those who are taking C as a first programming
course will find these useful in assesment their C
knowledge

>>

Visithttp://www.thinkanddon e.com/exams/main.aspx

>>
>I found something wrong already at the first level.
>Question 3 is:
>3 . Its given that variable x has been assigned a value of 5, which of the following statement will output the message "I am quite right"
>if (x!=5) printf("I am quite right");
>if (x=5) printf("I am quite right");
>both statements will display the message
>none of the above
>The second statement will assign 5 to x (which happens to already
>have that value, but that's irrelevant) and, since the result of
>that assignment can never be zero, it will execute the expression
>statement consisting of the printf call. So I checked the second
>answer, but the test believes the correct answer to be "none of
>the above".
>>

I made errors when compiling the examset. Many thanks for your insight
into C topics
>
I have reloaded DataSet1 with error proned question replaced with new
ones.

I think that the point you were trying to verify with that
question, namely the difference between comparison and assignment,
is important, but using zeroes instead of fives you could verify
it without the test expecting a factually incorrect answer.
--
Army1987 (Replace "NOSPAM" with "email")
A hamburger is better than nothing.
Nothing is better than eternal happiness.
Therefore, a hamburger is better than eternal happiness.

**Army1987** · Oct 6 '07, 02:25 PM

Re: Online C Programming Quizzes

On Sat, 06 Oct 2007 04:47:25 -0400, pete wrote:

borophyll@gmail .com wrote:

>>
>On Oct 6, 5:22 pm, Dexter <yousaf.a...@gm ail.comwrote:

>

Visithttp://www.thinkanddon e.com/exams/main.aspx

>

>Some of the questions could be better worded, and some of the
>questions are just plain wrong.
>>
>--------------
>Dataset 1
>--------------
>>
>Question 1 states: A C program is a collection of ______________
>(a) arrays
>(b) variables
>(c) functions
>(d) data types
>>
>Neither of these answers are correct, though you state that (c) is the
>answer. A C program is more than a collection of functions. What
>about object declarations? Type declarations? The correct answer
>should be "declaratio ns".

>
External declarations.
>
A C program consists of:
1 preprocessor directives
2 comments
3 external declarations
4 extra white space

You should make up your mind. Is the program the set of
preprocessing-files or of (preprocessed) translation units? In the
former case, they are made by groups of lines, and each line is
either a directive or it isn't. At this level, doing that
distinction is not very useful, as external declarations could be
built with macros and/or other IOCCC preprocessing trickery.
In the latter case, after preprocessing (translation phases 1-4)
there are no more comments, and translation units are made of
external declarations. See A.2.4 and A.3.

--
Army1987 (Replace "NOSPAM" with "email")
A hamburger is better than nothing.
Nothing is better than eternal happiness.
Therefore, a hamburger is better than eternal happiness.

**Army1987** · Oct 6 '07, 02:45 PM

Re: Online C Programming Quizzes

On Sat, 06 Oct 2007 08:18:57 +0000, borophyll wrote:

On Oct 6, 5:22 pm, Dexter <yousaf.a...@gm ail.comwrote:

>For C language, I have 3 set of quizzes that anyone is welcome to try
>online for free.
>Questions on C quizzes are rather easy to solve for Professional C
>programmers yet for those who are taking C as a first programming
>course will find these useful in assesment their C
>knowledge
>>
>Visithttp://www.thinkanddon e.com/exams/main.aspx

Some of the questions could be better worded, and some of the
questions are just plain wrong.
>
--------------
Dataset 1
--------------
Question 6: I don't like the wording of this question. The term
"assignment " here I think is not really correct

Well, ++E is defined in terms of (E+=1), so the distinction is
really immaterial.

---------------
Dataset 2
---------------
Question 9: Sorry, your answer is wrong. You declare an array of 10
characters. You can fit 10 characters in it. The answer is not 9.
There is no rule that the last element of an array of char must be a
null character. And even if there was, the null character is *still*
a character!

IIRC it talks about strings. Anyway, since the null is part of the
string, but the length of a string is defined as the number of
characters excluding the null, the wording shoul be "of length 9"
not "of 9 characters".
--
Army1987 (Replace "NOSPAM" with "email")
A hamburger is better than nothing.
Nothing is better than eternal happiness.
Therefore, a hamburger is better than eternal happiness.

**pete** · Oct 6 '07, 05:15 PM

Re: Online C Programming Quizzes

Army1987 wrote:

>
On Sat, 06 Oct 2007 04:47:25 -0400, pete wrote:
>

borophyll@gmail .com wrote:

>
On Oct 6, 5:22 pm, Dexter <yousaf.a...@gm ail.comwrote:

Visithttp://www.thinkanddon e.com/exams/main.aspx

Some of the questions could be better worded, and some of the
questions are just plain wrong.
>
--------------
Dataset 1
--------------
>
Question 1 states: A C program is a collection of ______________
(a) arrays
(b) variables
(c) functions
(d) data types
>
Neither of these answers are correct,
though you state that (c) is the
answer. A C program is more than a collection of functions. What
about object declarations? Type declarations? The correct answer
should be "declaratio ns".

External declarations.

A C program consists of:
1 preprocessor directives
2 comments
3 external declarations
4 extra white space

You should make up your mind. Is the program the set of
preprocessing-files or of (preprocessed) translation units?

No.
A program is the source files.
Have you ever written a C program?

N869
5.1.1.1 Program structure
[#1] A C program need not all be translated at the same
time. The text of the program is kept in units called
source files, (or preprocessing files) in this International
Standard.

--
pete

Online C Programming Quizzes

Online C Programming Quizzes

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