Answer: Option [D]

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Questions

16
An expression contains relational, assignment and arithmetic operators. If parenthesis are not specified, the order of evaluation of the operators would be:

Answer: Option [D]

17
Given two literals 0x001B and 033. What are these equal to?

Answer: Option [D]

Let us convert the given Hexadecimal number 0x001B to Decimal:

The first part is 0x16^{0}=0

The second part is 0x16^{3}+0x16^{2}+1x16^{1}+11x16^{0} [Though B is equivalent to 11]

=27

So, 0+27=0

Now we convert the octal number 033 to decimal:

0x8^{2}+3x^{1}+3^{0}

=27

18
What is the output of the following code segment(assuming sizeof(int) returns 4)?

int i=0x1 << sizeof(int)*8-1; printf("\n%x",i); i=i>>sizeof(int)*8-1; printf("%d",i);

Answer: Option [B]

20
Which is the correct sequence statements that swaps values of two statements?

Answer: Option [B]

Let us test this with an example:

Let, a=20 and b=40. After swapping them a=40 and b=20

a=a+b; a=20+40=60;

b=a-b; 60-40=20;

a=a-b; 60-20=40;

Rs. 40
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Data Communication & Computer Networks - Multiple Choice Questions and Answers | 250 MCQs

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