250+ TOP MCQs on Address Arithmetic and Answers [2024]

C questions and puzzles on “Address Arithmetic”. One shall practice these questions and puzzles to improve their C programming skills needed for various interviews (campus interviews, walkin interviews, company interviews), placements, entrance exams and other competitive exams. These programming puzzles can be attempted by anyone focusing on learning C Programming language. They can be a beginner, fresher, engineering graduate or an experienced IT professional. Our C questions come with detailed explanation of the answers which helps in better understanding of C concepts.

Here is a listing of C questions and puzzles on “Address Arithmetic” along with answers, explanations and/or solutions:

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

```
    #include 
```
```
    int main()
```
```
    {
```
```
        double *ptr = (double *)100;
```
```
        ptr = ptr + 2;
```
```
        printf("%u", ptr);
```
```
    }
```

a) 102
b) 104
c) 108
d) 116
Answer: d
Clarification:None

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

```
    #include 
```
```
    int main()
```
```
    {
```
```
        int *p = (int *)2;
```
```
        int *q = (int *)3;
```
```
        printf("%d", p + q);
```
```
    }
```

a) 2
b) 3
c) 5
d) Compile time error
Answer: d
Clarification: None.

3. Which of the following arithmetic operation can be applied to pointers a and b?
(Assuming initialization as int *a = (int *)2; int *b = (int *)3;)
a) a + b
b) a – b
c) a * b
d) a / b
Answer: b
Clarification: None.

4. What is the size of *ptr in a 32-bit machine (Assuming initialization as int *ptr = 10;)?
a) 1
b) 2
c) 4
d) 8
Answer: c
Clarification: None.

5. Which of following logical operation can be applied to pointers?
(Assuming initialization int *a = 2; int *b = 3;)
a) a | b
b) a ^ b
c) a & b
d) None of the mentioned
Answer: d
Clarification: None.

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

```
    #include 
```
```
    void main()
```
```
    {
```
```
        char *s = "hello";
```
```
        char *p = s;
```

        printf("%ct%c", *(p + 1), s[1]);

```
    }
```

a) h e
b) e l
c) h h
d) e e
Answer: d
Clarification: None.

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

```
    #include 
```
```
    void main()
```
```
    {
```
```
        char *s = "hello";
```
```
        char *p = s;
```
```
        printf("%ct%c", *p, s[1]);
```
```
    }
```

a) e h
b) Compile time error
c) h h
d) h e
Answer: d
Clarification: None.

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

```
    #include 
```
```
    void main()
```
```
    {
```
```
        char *s = "hello";
```
```
        char *n = "cjn";
```
```
        char *p = s + n;
```
```
        printf("%ct%c", *p, s[1]);
```
```
    }
```

a) h e
b) Compile time error
c) c o
d) h n
Answer: b
Clarification: None.

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