CPP Pointer to Void MCQ Objective Quiz

Subjects

एम एस सी आई टी

MSCIT

CPP

Pointer to Void has 10 Questions

Void pointer can point to which type of objects?

int

float

double

all of the mentioned

When does the void pointer can be dereferenced?

when it doesn't point to any value

when it cast to another type of object

using delete keyword

none of the mentioned

The pointer can point to any variable that is not declared with which of these?

const

volatile

both a & b

static

A void pointer cannot point to which of these?

methods in c++

class member in c++

all of the mentioned

none of the mentioned

What is the output of this program?

```
    #include 
```
```
    using namespace std;
```
```
    int func(void *Ptr);
```
```
    int main()
```
```
    {
```
```
        char *Str = "abcdefghij";
```
```
        func(Str);
```
```
        return 0;
```
```
    }
```
```
    int func(void *Ptr)
```
```
    {
```
```
        cout << Ptr;
```
```
        return 0;
```
```
    }
```

abcdefghij

address of string "abcdefghij"?

compile time error

runtime error

What is the output of this program?

```
    #include 
```
```
    using namespace std;
```
```
    int main()
```
```
    {
```
```
        int *p;
```
```
        void *vp;
```
```
        if (vp == p);
```
```
            cout << "equal";
```
```
        return 0;
```
```
    }
```

equal

no output

compile error

runtime error

What is the output of this program?

```
    #include 
```
```
    using namespace std;
```
```
    int main()
```
```
    {
```
```
        int i;
```
```
        char c;
```
```
        void *data;
```
```
        i = 2;
```
```
        c = 'd';
```
```
        data = &i;
```

        cout << "the data points to the integer value" << data;

```
        data = &c;
```

        cout << "the data now points to the character" << data;

```
        return 0;
```
```
    }
```

two memory addresses

both of the mentioned

none of the mentioned

What is the output of this program?

```
    #include 
```
```
    using namespace std;
```
```
    int main()
```
```
    {
```
```
        int n = 5;
```
```
        void *p = &n;
```
```
        int *pi = static_cast<int*>(p);
```
```
        cout << *pi << endl;
```
```
        return 0;
```
```
    }
```

compile time error

runtime error

What is the output of this program?

```
    #include 
```
```
    using namespace std;
```
```
    int main()
```
```
    {
```
```
        int a = 5, c;
```
```
        void *p = &a;
```
```
        double b = 3.14;
```
```
        p = &b;
```
```
        c = a + b;
```
```
        cout << c << '\n' << p;
```
```
        return 0;
```
```
    }
```

8, memory address

8.14

memory address

none of the mentioned

What we can't do on a void pointer?

pointer arithemetic

pointer functions

both of the mentioned

none of the mentioned