Classical

C Programming MCQ - Arrays

1:  

O(N)(linear time) is better than O(1) constant time.

A. True
B. False
C.
D.
 
 

Option: B

Explanation :


2:   For 'C' programming language
A. Constant expressions are evaluated at compile
B. String constants can be concatenated at compile time
C. Size of array should be known at compile time
D. All of these
 
 

Option: D

Explanation :


3:   What is the maximun number of dimensions an array in C may have?
A. Two
B. Eight
C. Twenty
D. Theoratically no limit. The only practical limits are memory size and compilers
 
 

Option: D

Explanation :


4:  

If x is an array of interger, then the value of &x[i] is same as

A.

&x[i-1] + sizeof (int)

B.

x + sizeof (int) * i

C.

x+i

D.

none of these

 
 

Option: A

Explanation :

X+i means increment in value of X not in  address of X  so it cant represent address of X. 

 &x[i] means address of the ith element. 

So & X[i-1]  defines address of i-1 element .sizeof(int) defines size of an element
So &x[i-1] + sizeof(int) means address of i-1 element plus size of an element that means address of ith element.
It cant be option c as x+i is not representing any address.

X+i means increment in value of X not in  address of X  so it cant represent address of X.
So option (A) is correct


5:   If S is an array of 80 characters, then the value assigned to S through the statement scanf("%s",S) with input 1 2 3 4 5 would be
A. "12345"
B. nothing since 12345 is an integer
C. S is an illegal name for string
D. %s cannot be used for reading in values of S
 
 

Option: A

Explanation :




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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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