100 Multiple choice questions in C

Re: 100 Multiple choice questions in C(New Question?)

Which one of the following Standard C functions can be used to sort a string array?
Choice 1

qsort (Ans)
Choice 2

sort
Choice 3

quicksort
Choice 4

asort
Choice 5

There is no Standard C function for such a sort.

 

int a[100];
int *p=a;

for(;a<p+100; a++)
*a=0;

a=p;

Which one of the following describes the error in the sample code above?
Choice 1

The initialization of p from a is not allowed since the compiler believes that they have differing types. There should be whitespace between the star and p to achieve the desired effect.
Choice 2

It is not permissible to omit the initializer of a for loop.
Choice 3

The address of the first element not in the array a is p + 100 * sizeof(int), not p + 100.
Choice 4

It is not permissible to alter the value of a. (Ans)
Choice 5

The iterator of the for loop should be a += sizeof(int) instead of a++.

 

Re: 100 Multiple choice questions in C(New Q?)

#include <stdlib.h>

int main()
{
struct x {double d; int i; char c;};

struct x *xp=(struct x*)calloc(1, sizeof(struct x));

}

Referring to the above sample code, what are the values of the structure members pointed to by "xp" after the "calloc"?
Choice 1

undefined,undefined,undefined
Choice 2

1.0,1,'\01'
Choice 3

undefined,0,'\0' (Ans)
Choice 4

0.0,0,'\0'
Choice 5

0e0,0,'\0'

 

I am not that sure that is the answer.
By definition an lvalue is a "value" that can take part in an assigment on the left side. More particular, the lvalue is a "writable" value, and an rvalue is a "readable" value. Nothing to do with pointers.
for example:
(1+2) its a rvalue -> we could never write (1+2) = 4 :P
but this is a lvalue but also a rvalue
int & something()
{
static int something = 0;
return something;
}
something() = 3; // something() as lvalue
int some_thing = something(); // something() as rvalue

 

Code:

//  Oki, but what pointer reference do we have here?
const int anything = 12;
int some_thing = anything;
some_thing = 0; // lvalue = rvalue
// Consider that we can use a pointer to point to an rvalue also
const char * pszSomething = "Hello";
// Considering the statement above, what would be the difference between rvalue and lvalue
// if this is the definition of an lvalue?!

That's why I think the choice "All lvalues can be used on the right side of an assignment statement. (Ans--?)" was marked as the answer, because is the most plausible of all. This means that If a value is a lvalue it can also be used as an rvalue.

And about the function int & something(); I used in the previous example,I should say that not all the references are "translated" by the compiler into pointers.In this case, it should not. But that's debatable depending on what do you mean by "pointer".

If I am wrong correct me please.
Cheers

 

pls can anyone send me the answers at samdanikalpesh@gmail.com

 

mate your not allowed to advertise on this forum like that

 

Please send me the answers to these questions at my ID amit8.j@tcs.com
Thanks
Amit

 

Re: 100 Multiple choice questions in C !!i need answers!!

wud u plz send me answers for these 100 mcqs at the undersigned-as soon as possible!!
guneet2027@gmail.com

 

can anyone please provide me the ans of the above question from 1 to 100 on mishra.vaibhav00@gmail.com or vaibhavmishra9235@gmail.com or vaibhavmishra0@gmail.com it's urgent

 

hello
plz mail me answers at vartika.mishra27@gmail.com
im making a website on online examination as my project so i need ans of the question...
is the option mark as [ans] is the right answer plz tel me so that i can complete my website...

 

Can you please send me the answers at abg_manit@yahoo.com. I need them urgently

 

Best post of the entire thread...

 

can some1 pl mail the answers to me at elkovou@hotmail.com

 

can some1 pl mail the answers to me at
elkovou@hotmail.com

 

maybe by email
elkovou@hotmail.com

 

friends,can you sent the answers to rmuthu18@yahoo.com

 

plz mail me the answers by today at monica_adarsh@yahoo.com. thanx in advance