C Programming Questions and Answers – Pointers and Addresses – 2

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This set of C Multiple Choice Questions & Answers (MCQs) focuses on “Pointers and Addresses – 2”.

Pre-requisite for C Pointers and Addresses MCQ set: Video Tutorial on C Pointers.

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1. Which is an indirection operator among the following?
a) &
b) *
c) ->
d) .
View Answer

Answer: b
Explanation: None.

2. Which of the following does not initialize ptr to null (assuming variable declaration of a as int a=0;)?
a) int *ptr = &a;
b) int *ptr = &a – &a;
c) int *ptr = a – a;
d) All of the mentioned
View Answer

Answer: a
Explanation: None.
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3. What will be the output of the following C code?

  1.     #include <stdio.h>
  2.     int x = 0;
  3.     void main()
  4.     {
  5.         int *ptr = &x;
  6.         printf("%p\n", ptr);
  7.         x++;
  8.         printf("%p\n ", ptr);
  9.     }

a) Same address
b) Different address
c) Compile time error
d) Varies
View Answer

Answer: a
Explanation: None.
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4. What will be the output of the following C code?

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  1.     #include <stdio.h>
  2.     int x = 0;
  3.     void main()
  4.     {
  5.         int *const ptr = &x;
  6.         printf("%p\n", ptr);
  7.         ptr++;
  8.         printf("%p\n ", ptr);
  9.     }

a) 0 1
b) Compile time error
c) 0xbfd605e8 0xbfd605ec
d) 0xbfd605e8 0xbfd605e8
View Answer

Answer: b
Explanation: None.
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5. What will be the output of the following C code?

  1.     #include <stdio.h>
  2.     void main()
  3.     {
  4.         int x = 0;
  5.         int *ptr = &x;
  6.         printf("%p\n", ptr);
  7.         ptr++;
  8.         printf("%p\n ", ptr);
  9.     }

a) 0xbfd605e8 0xbfd605ec
b) 0xbfd605e8 0cbfd60520
c) 0xbfd605e8 0xbfd605e9
d) Run time error
View Answer

Answer: a
Explanation: None.

6. What will be the output of the following C code?

  1.     #include <stdio.h>
  2.     void main()
  3.     {
  4.         int x = 0;
  5.         int *ptr = &5;
  6.         printf("%p\n", ptr);
  7.     }

a) 5
b) Address of 5
c) Nothing
d) Compile time error
View Answer

Answer: d
Explanation: None.

7. What will be the output of the following C code?

  1.     #include <stdio.h>
  2.     void main()
  3.     {
  4.         int x = 0;
  5.         int *ptr = &x;
  6.         printf("%d\n", *ptr);
  7.     }

a) Address of x
b) Junk value
c) 0
d) Run time error
View Answer

Answer: c
Explanation: None.

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Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He lives in Bangalore, and focuses on development of Linux Kernel, SAN Technologies, Advanced C, Data Structures & Alogrithms. Stay connected with him at LinkedIn.

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