Pointers & Function Arguments 2 - C Programming Questions and Answers

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

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

1. Which of the following can never be sent by call-by-value?
a) Variable
b) Array
c) Structures
d) Both Array and Structures
View Answer

Answer: b
Explanation: None.

2. Which type of variables can have the same name in a different function?
a) Global variables
b) Static variables
c) Function arguments
d) Both static variables and Function arguments
View Answer

Answer: d
Explanation: None.

3. Arguments that take input by user before running a program are called?
a) Main function arguments
b) Main arguments
c) Command-Line arguments
d) Parameterized arguments
View Answer

Answer: c
Explanation: None.

4. What is the maximum number of arguments that can be passed in a single function?
a) 127
b) 253
c) 361
d) No limits in number of arguments
View Answer

Answer: b
Explanation: None.

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

```
    #include <stdio.h>
```
```
    void m(int *p, int *q)
```
```
    {
```

        int temp = *p; *p = *q; *q = temp;

```
    }
```
```
    void main()
```
```
    {
```
```
        int a = 6, b = 5;
```
```
        m(&a, &b);
```
```
        printf("%d %d\n", a, b);
```
```
    }
```

a) 5 6
b) 6 5
c) 5 5
d) 6 6
View Answer

Answer: a
Explanation: None.

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

```
    #include <stdio.h>
```
```
    void m(int *p)
```
```
    {
```
```
        int i = 0;
```
```
        for(i = 0;i < 5; i++)
```
```
        printf("%d\t", p[i]);
```
```
    }
```
```
    void main()
```
```
    {
```
```
        int a[5] = {6, 5, 3};
```
```
        m(&a);
```
```
    }
```

a) 0 0 0 0 0
b) 6 5 3 0 0
c) Run time error
d) 6 5 3 junk junk
View Answer

Answer: b
Explanation: None.

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

```
    #include <stdio.h>
```
```
    void m(int p, int q)
```
```
    {
```
```
        int temp = p;
```
```
        p = q;
```
```
        q = temp;
```
```
    }
```
```
    void main()
```
```
    {
```
```
        int a = 6, b = 5;
```
```
        m(a, b);
```
```
        printf("%d %d\n", a, b);
```
```
    }
```

a) 5 6
b) 5 5
c) 6 5
d) 6 6
View Answer

Answer: c
Explanation: None.

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

```
    #include <stdio.h>
```
```
    void m(int p, int q)
```
```
    {
```
```
        printf("%d %d\n", p, q);
```
```
    }
```
```
    void main()
```
```
    {
```
```
        int a = 6, b = 5;
```
```
        m(a);
```
```
    }
```

a) 6
b) 6 5
c) 6 junk value
d) Compile time error
View Answer

Answer: d
Explanation: None.

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

```
    #include <stdio.h>
```
```
    void m(int p)
```
```
    {
```
```
        printf("%d\n", p);
```
```
    }
```
```
    void main()
```
```
    {
```
```
        int a = 6, b = 5;
```
```
        m(a, b);
```
```
        printf("%d %d\n", a, b);
```
```
    }
```

a) 6
b) 6 5
c) 6 junk value
d) Compile time error
View Answer

Answer: d
Explanation: None.

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