Quiz-1

June 23, 2019

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Question 1

Time: 00:00:00

Which variable does equals in size with enum variable?

int variable

float variable

string variable

none of the mentioned

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PrepInsta Explanation
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Explanation: The enum variable is converted to an integer and stored by the compiler. So both are equal in size.

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Question 2

Time: 00:00:00

What is the output of this program?

```
    #include <iostream>
```

```
    using namespace std;
```

```
    enum test
```

```
    {
```

```
        A = 32, B, C
```

```
    };
```

```
    int main()
```

```
    {
```

```
        cout << A << B<< C;
```

```
        return 0;
```

```
    }
```

323334

323232

323130

None of these

Good Job!

Oops!

Report the answer

PrepInsta Explanation
User Explanation

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Explanation: If we not assigned any value to enum variable means, then the next number to initialized number will be allocated to the variable.
Output:

$ g++ enum2.cpp

$ a.out

323334

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Question 3

Time: 00:00:00

. What is the output of this program?

```
    #include <iostream>
```

```
    using namespace std;
```

```
    enum colour {
```

        green, red, blue, white, yellow, pink

```
    };
```

```
    int main()
```

```
    {
```

        cout << green<< red<< blue<< white<< yellow<< pink;

```
        return 0;
```

```
    }
```

012345

123456

12244

4656

Good Job!

Oops!

Report the answer

PrepInsta Explanation
User Explanation

Once you attempt the question then PrepInsta explanation will be displayed.

Output:

$ g++ enum3.cpp

$ a.out

012345 <pre>[/expand]

 

9. What is the output of this program?

    <pre lang="cpp" line="1" cssfile="hk1_style">

    #include <iostream>

    using namespace std;

    int main()

    {

        enum channel {star, sony, zee};

        enum symbol {hash, star};

        int i = 0;

        for (i = star; i <= zee; i++) {

            printf("%d ", i);

        }

        return 0;

    }

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Question 4

Time: 00:00:00

Identify the incorrect option.

enumerators are constants

enumerators are user-defined types

enumerators are same as macros

None of these

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Oops!

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Answer : enumerators are same as macros

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Question 5

Time: 00:00:00

In which type do the enumerators are stored by the compiler?

String

Integer

Float

None of these

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Oops!

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PrepInsta Explanation
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Explanation: In C++, enumerations are stored as integers by the compiler starting with 0.

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Question 6

Time: 00:00:00

Which variable does equals in size with enum variable?

int variable

float variable

string variable

None of these

Good Job!

Oops!

Report the answer

PrepInsta Explanation
User Explanation

Once you attempt the question then PrepInsta explanation will be displayed.

Explanation: The enum variable is converted to an integer and stored by the compiler. So both are equal in size.

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Start

Question 7

Time: 00:00:00

How are the constants declared?

const keyword

#define preprocessor

both const keyword and #define preprocessor

None of these

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Oops!

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Explanation: The const will declare with a specific type value and #define is used to declare user-defined constants.

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Question 8

Time: 00:00:00

What is the output of this program?

```
    #include <iostream>
```

```
    using namespace std;
```

```
    int main()
```

```
    {
```

```
        int  const  p = 5;
```

```
        cout << ++p;
```

```
        return 0;
```

```
    }
```

Error

None of these

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Oops!

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PrepInsta Explanation
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Answer : Error

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Question 9

Time: 00:00:00

Which of the following statement is not true about preprocessor directives?

These are lines read and processed by the preprocessor

They do not produce any code by themselves

These must be written on their own line

They end with a semicolon

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Oops!

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PrepInsta Explanation
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Explanation: No terminating character required for preprocessor directives statements.

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Question 10

Time: 00:00:00

Regarding the following statement which of the statements is true?
const int a = 100;

Declares a variable a with 100 as its initial value

Declares a construction a with 100 as its initial value

Declares a constant a whose value will be 100

Constructs an integer type variable with an as identifier and 100 as the value

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Oops!

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PrepInsta Explanation
User Explanation

Once you attempt the question then PrepInsta explanation will be displayed.

Explanation: Because the const is used to declare non-changeable values only.

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Start

["0","40","60","80","100"]

["Need more practice!","Keep trying!","Not bad!","Good work!","Perfect!"]

Please login to report

Hello PrepSter,

If you find any errors in the quiz below kindly comment in the comment section and we will make it our priority to fix it.

Also if you have a better of the solution to the questions, please do comment them below and if we find it better than ours, we will post it in our website.

Question 1

Time: 00:00:00

Which variable does equals in size with enum variable?

int variable

float variable

string variable

none of the mentioned

Good Job!

Oops!

Report the answer

PrepInsta Explanation
User Explanation

Once you attempt the question then PrepInsta explanation will be displayed.

Explanation: The enum variable is converted to an integer and stored by the compiler. So both are equal in size.

Please login to submit your explanation

Start

Question 2

Time: 00:00:00

What is the output of this program?

```
    #include <iostream>
```

```
    using namespace std;
```

```
    enum test
```

```
    {
```

```
        A = 32, B, C
```

```
    };
```

```
    int main()
```

```
    {
```

```
        cout << A << B<< C;
```

```
        return 0;
```

```
    }
```

323334

323232

323130

None of these

Good Job!

Oops!

Report the answer

PrepInsta Explanation
User Explanation

Once you attempt the question then PrepInsta explanation will be displayed.

Explanation: If we not assigned any value to enum variable means, then the next number to initialized number will be allocated to the variable.
Output:

$ g++ enum2.cpp

$ a.out

323334

Please login to submit your explanation

Start

Question 3

Time: 00:00:00

. What is the output of this program?

```
    #include <iostream>
```

```
    using namespace std;
```

```
    enum colour {
```

        green, red, blue, white, yellow, pink

```
    };
```

```
    int main()
```

```
    {
```

        cout << green<< red<< blue<< white<< yellow<< pink;

```
        return 0;
```

```
    }
```

012345

123456

12244

4656

Good Job!

Oops!

Report the answer

PrepInsta Explanation
User Explanation

Once you attempt the question then PrepInsta explanation will be displayed.

Output:

$ g++ enum3.cpp

$ a.out

012345 <pre>[/expand]

 

9. What is the output of this program?

    <pre lang="cpp" line="1" cssfile="hk1_style">

    #include <iostream>

    using namespace std;

    int main()

    {

        enum channel {star, sony, zee};

        enum symbol {hash, star};

        int i = 0;

        for (i = star; i <= zee; i++) {

            printf("%d ", i);

        }

        return 0;

    }

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Start

Question 4

Time: 00:00:00

Identify the incorrect option.

enumerators are constants

enumerators are user-defined types

enumerators are same as macros

None of these

Good Job!

Oops!

Report the answer

PrepInsta Explanation
User Explanation

Once you attempt the question then PrepInsta explanation will be displayed.

Answer : enumerators are same as macros

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Start

Question 5

Time: 00:00:00

In which type do the enumerators are stored by the compiler?

String

Integer

Float

None of these

Good Job!

Oops!

Report the answer

PrepInsta Explanation
User Explanation

Once you attempt the question then PrepInsta explanation will be displayed.

Explanation: In C++, enumerations are stored as integers by the compiler starting with 0.

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Start

Question 6

Time: 00:00:00

Which variable does equals in size with enum variable?

int variable

float variable

string variable

None of these

Good Job!

Oops!

Report the answer

PrepInsta Explanation
User Explanation

Once you attempt the question then PrepInsta explanation will be displayed.

Explanation: The enum variable is converted to an integer and stored by the compiler. So both are equal in size.

Please login to submit your explanation

Start

Question 7

Time: 00:00:00

How are the constants declared?

const keyword

#define preprocessor

both const keyword and #define preprocessor

None of these

Good Job!

Oops!

Report the answer

PrepInsta Explanation
User Explanation

Once you attempt the question then PrepInsta explanation will be displayed.

Explanation: The const will declare with a specific type value and #define is used to declare user-defined constants.

Please login to submit your explanation

Start

Question 8

Time: 00:00:00

What is the output of this program?

```
    #include <iostream>
```

```
    using namespace std;
```

```
    int main()
```

```
    {
```

```
        int  const  p = 5;
```

```
        cout << ++p;
```

```
        return 0;
```

```
    }
```

Error

None of these

Good Job!

Oops!

Report the answer

PrepInsta Explanation
User Explanation

Once you attempt the question then PrepInsta explanation will be displayed.

Answer : Error

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Start

Question 9

Time: 00:00:00

Which of the following statement is not true about preprocessor directives?

These are lines read and processed by the preprocessor

They do not produce any code by themselves

These must be written on their own line

They end with a semicolon

Good Job!

Oops!

Report the answer

PrepInsta Explanation
User Explanation

Once you attempt the question then PrepInsta explanation will be displayed.

Explanation: No terminating character required for preprocessor directives statements.

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Start

Question 10

Time: 00:00:00

Regarding the following statement which of the statements is true?
const int a = 100;

Declares a variable a with 100 as its initial value

Declares a construction a with 100 as its initial value

Declares a constant a whose value will be 100

Constructs an integer type variable with an as identifier and 100 as the value

Good Job!

Oops!

Report the answer

PrepInsta Explanation
User Explanation

Once you attempt the question then PrepInsta explanation will be displayed.

Explanation: Because the const is used to declare non-changeable values only.

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Start

["0","40","60","80","100"]

["Need more practice!","Keep trying!","Not bad!","Good work!","Perfect!"]

Please login to report

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