Address Arithmetic - C Programming Questions and Answers

This set of C Multiple Choice Questions & Answers (MCQs) focuses on “Address Arithmetic – 1”.

Pre-requisite for C Address Arithmetic MCQ set: Video Tutorial on C Pointers.

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

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

a) 102
b) 104
c) 108
d) 116
View Answer

Answer: d
Explanation:None

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

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

a) 2
b) 3
c) 5
d) Compile time error
View Answer

Answer: d
Explanation: 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
View Answer

Answer: b
Explanation: 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
View Answer

Answer: c
Explanation: 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
View Answer

Answer: d
Explanation: None.

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

```
    #include <stdio.h>
```
```
    void main()
```
```
    {
```
```
        char *s = "hello";
```
```
        char *p = s;
```

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

```
    }
```

a) h e
b) e l
c) h h
d) e e
View Answer

Answer: d
Explanation: None.

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

```
    #include <stdio.h>
```
```
    void main()
```
```
    {
```
```
        char *s = "hello";
```
```
        char *p = s;
```
```
        printf("%c\t%c", *p, s[1]);
```
```
    }
```

a) e h
b) Compile time error
c) h h
d) h e
View Answer

Answer: d
Explanation: None.

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

```
    #include <stdio.h>
```
```
    void main()
```
```
    {
```
```
        char *s = "hello";
```
```
        char *n = "cjn";
```
```
        char *p = s + n;
```
```
        printf("%c\t%c", *p, s[1]);
```
```
    }
```

a) h e
b) Compile time error
c) c o
d) h n
View Answer

Answer: b
Explanation: None.

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C Programming Questions and Answers – Address Arithmetic – 1

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