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Microsoft Interview Question for Software Engineer / Developers


Country: India
Interview Type: In-Person



Comment hidden because of low score. Click to expand.
5
of 7 vote

In the first one an int is casted into (int*) and then it is dereferenced, hence if i was equal to 10(suppose), you are dereferencing variable at address 10, this could be a segmentation fault.

The second one is fine in that p will have the value of i.

- Luv June 28, 2012 | Flag Reply
Comment hidden because of low score. Click to expand.
0
of 0 votes

Absolutely correct.

- aThakur June 28, 2012 | Flag
Comment hidden because of low score. Click to expand.
1
of 1 vote

What is i here? Not clear form the question. If i is an int. Answer is perfect. Think what if i is a int* ?

- Observer June 28, 2012 | Flag
Comment hidden because of low score. Click to expand.
0
of 0 votes

I like the soln but Observer's point seems valid. This needs to be revisited by Luv.

- Dilbert Einstein July 22, 2012 | Flag
Comment hidden because of low score. Click to expand.
1
of 1 vote

Actually Observer is perfectly saying correct.
if variable i is a pointer to float(suppose), then first line is correct and second one is incoorect.
So, it completely depends upon the nature of variable i.

- Amit Priyadarshi June 29, 2012 | Flag Reply
Comment hidden because of low score. Click to expand.
0
of 0 votes

Interesting point.

- eugene.yarovoi June 29, 2012 | Flag
Comment hidden because of low score. Click to expand.
0
of 0 votes

may be i is a void *

- Aalok June 30, 2012 | Flag
Comment hidden because of low score. Click to expand.
0
of 0 votes

@Amit Priyadarshi : i did not get you, plz explain briefly.... ???

- Raj Naik June 30, 2012 | Flag
Comment hidden because of low score. Click to expand.
0
of 0 vote

The first answer given by Luv is correct

- Raj June 28, 2012 | Flag Reply
Comment hidden because of low score. Click to expand.
0
of 0 vote

what is segmentation fault??

- kishore June 28, 2012 | Flag Reply
Comment hidden because of low score. Click to expand.
0
of 0 votes

In his case, 10 would definitely [ Ok most probably ] be a memory location that is allotted for the OS related basic operation..service routines etc. So, code trying to access them would fail.

- Pavan Dittakavi June 28, 2012 | Flag
Comment hidden because of low score. Click to expand.
0
of 0 votes

To be more specific, code trying to access those memory locations would receive a signal from the operating system that it's not permitted to access them. The program will then typically terminate.

- eugene.yarovoi June 29, 2012 | Flag
Comment hidden because of low score. Click to expand.
0
of 0 vote

Assuming that both statements are currect, then in the 1st one i is a pointer which can be casted to int *. In the second one i is an integer (or any variable whose address can be casted to int *.

- IntwPrep December 04, 2013 | Flag Reply
Comment hidden because of low score. Click to expand.
0
of 0 vote

Assuming that both statements are correct, then in the 1st one i is a pointer which can be casted to int *. In the second one i is an integer (or any variable whose address can be casted to int *.

- IntwPrep December 04, 2013 | Flag Reply


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