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C Programming Quiz

Test your knowledge of C programming with this engaging quiz! Designed for students, teachers, and programming enthusiasts, this quiz covers a wide range of topics related to the C language.

10 challenging questions
Assess your understanding of C syntax, functions, and operators
Great for honing your programming skills

10 Questions2 MinutesCreated by CodingEagle37

1. Comment on the output of this C code?

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

A) k is 6

B) Error due to const succeeding int

C) Error, because a constant variable can be changed only twice

D) Error, because a constant variable cannot be changed

2. What is the output of this C code?

```
    #include <stdio.h>
```
```
    void main()
```
```
    {
```
```
        int a = 2 + 3 - 4 + 8 -  5 % 4;
```
```
        printf("%d\n", a);
```
```
    }
```

A) 0

B) 8

C) 11

D) 9

3. Which of the following is an invalid assignment operator?

A) a %= 10;

B) a /= 10;

C) a |= 10;

D) None of the mentioned

4. #pragma exit is primarily used for?

A) Checking memory leaks after exitting the program

B) Informing Operating System that program has terminated

C) Running a function at exitting the program

D) No such preprocessor exist

5. What is the scope of a function?

A) Whole source file in which it is defined

B) From the point of declaration to the end of the file in which it is defined

C) Any source file in a program

D) From the point of declaration to the end of the file being compiled

6. What is the output of this C code?

```
    #include <stdio.h>
```
```
    struct p
```
```
    {
```
```
        int x[2];
```
```
    };
```
```
    struct q
```
```
    {
```
```
        int *x;
```
```
    };
```
```
    int main()
```
```
    {
```
```
        struct p p1 = {1, 2};
```
```
        struct q *ptr1;
```
```
        ptr1->x = (struct q*)&p1.x;
```
```
        printf("%d\n", ptr1->x[1]);
```
```
    }
```

A) Compile time error

B) Segmentation fault/code crash

C) 2

D)0

7. Which loop is most suitable to first perform the operation and then test the condition?

A) for loop

B) while loop

C) do-while loop

D) none of the mentioned

8. What is the output of this C code?

```
 #include <stdio.h>
```
```
    int foo(int, int);
```
```
    #define foo(x, y) x / y + x
```
```
    int main()
```
```
    {
```
```
        int I = -6, j = 3;
```
```
        printf("%d ",foo(i + j, 3));
```
```
        #undef foo
```
```
        printf("%d\n",foo(i + j, 3));
```
```
    }
```
```
    int foo(int x, int y)
```
```
    {
```
```
        return x / y + x;
```
```
    }
```

A) -8 -4

B) Compile time error

C) -8 -8

D) Undefined behaviour

9. Which of the following properties of #define not true?

A) You can use a pointer to #define

B) #define can be made externally available

C) They obey scope rules

D) All of the mentioned

10. Which of the following mathematical function requires 2 parameter for successful function call?

A) fmod();

B) div();

C) atan2();

D) all of the mentioned

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