Static Variables - C Questions and Answers

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

Pre-requisite for this C MCQ set: Advanced C Programming Video Tutorial.

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

```
    #include <stdio.h>
```
```
    void main()
```
```
    {
```
```
        m();
```
```
        m();
```
```
    }
```
```
    void m()
```
```
    {
```
```
        static int x = 5;
```
```
        x++;
```
```
        printf("%d", x);
```
```
    }
```

a) 6 7
b) 6 6
c) 5 5
d) 5 6
View Answer

Answer: a
Explanation: None.

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

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```
    #include <stdio.h>
```
```
    void main()
```
```
    {
```
```
        static int x;
```
```
        printf("x is %d", x);
```
```
    }
```

a) 0
b) 1
c) Junk value
d) Run time error
View Answer

Answer: a
Explanation: None.

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

```
    #include <stdio.h>
```
```
    static int x;
```
```
    void main()
```
```
    {
```
```
        int x;
```
```
        printf("x is %d", x);
```
```
    }
```

a) 0
b) Junkvalue
c) Run time error
d) Nothing
View Answer

Answer: b
Explanation: None.

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

```
    #include <stdio.h>
```
```
    void main()
```
```
    {
```
```
        static double x;
```
```
        int x;
```
```
        printf("x is %d", x);
```
```
    }
```

a) Nothing
b) 0
c) Compile time error
d) Junkvalue
View Answer

Answer: c
Explanation: None.

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

```
    #include <stdio.h>
```
```
    void main()
```
```
    {
```
```
        static int x;
```
```
        if (x++ < 2)
```
```
        main();
```
```
    }
```

a) Infinite calls to main
b) Run time error
c) Varies
d) main is called twice
View Answer

Answer: d
Explanation: None.

6. Which of following is not accepted in C?
a) static a = 10; //static as
b) static int func (int); //parameter as static
c) static static int a; //a static variable prefixed with static
d) all of the mentioned
View Answer

Answer: c
Explanation: None.

7. Which of the following cannot be static in C?
a) Variables
b) Functions
c) Structures
d) None of the mentioned
View Answer

Answer: d
Explanation: None.

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