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C Programming MCQ - Operators & Expressions

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6:  

The expression a << 6 shifts all bits of a six places to the left. If a Ox6db7, then what is the value of a << 6

A. 0xa72b
B. 0xa2b
C. 0x6dc0
D. 0x1111
 
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Option: C

Explanation :

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7:  

The expression 5 - 2 - 3 * 5 - 2 will evaluate to 18, if - is left associative and

A. * has precedence over *
B. * has precedence over -
C. - has precedence over *
D. - has precedence over -
 
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Option: C

Explanation :
5-2-3*5-2 will yield 18, id it is treated as (5-(2-3))*(5-2). i.e., if - has precedence over* and if it associates from the right

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8:  

Coercion 

A.

Takes place across an assignment operator
B.

takes place if an operator has operands of different data types
C.

means casting
D.

both (a) & (b)
 
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Option: D

Explanation :

Coercion is the automatic conversion between compatible types and it is done by compiler

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9:  

Choose the correct statements

A.

constant expressions are evaluated at compile time
B.

string constants  can be concatenated at compile time
C.

size of array must be known at compile time
D.

All of above
 
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Option: D

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10:  

Which of the following operators takes only integer operands ?

A.

+
B.

*
C.

/
D.

%
 
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Option: D

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Syllabus Covered in this section is

  • Elements of C-Tokens
  • Identifiers
  • data types in C
  • Control structures in, C
  •  Sequence, selection and iteration(s).
  • Structured data types in C
  • Arrays, Structures, union, String, and pointers
  • Functions, Recursion
  • Parameter passing, Scope
  •  Binding, Abstract data types

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