Question 12 (1 point) radius is a C++ keyword. Question 12 options: True False S

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Question 12 (1 point)

radius is a C++ keyword.

Question 12 options:

True

False

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Question 13 (1 point)

Declare an int called s with an initial value of 20. Don't put in any unnecessary spaces.

Question 13 options:

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Question 14 (1 point)

What is the value of 11/2

Question 14 options:

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Question 15 (1 point)

What is the value of 2 / 5 * 3

Question 15 options:

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Question 16 (1 point)

What is the final value of d after the following code segment is executed?

double d=1.0;

int a=1;

d = a++;

Question 16 options:

0.0

1.0

2.0

undefined

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Question 17 (1 point)

What is the final value of d after the following code segment is executed?

double d=1.0;

int a=1;

d = ++a;

Question 17 options:

0.0

1.0

2.0

undefined

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Question 18 (1 point)

What is the final value of d after the following code segment is executed?

double d=1.0;

int a=1;

d = a/2;

Question 18 options:

0.0

0.5

1.0

undefined

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Question 19 (1 point)

The default case is required with the break statement.

Question 19 options:

True

False

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Question 20 (1 point)

The expression (x > y && a < b) is true if either x > y or a < b .

Question 20 options:

True

False

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Question 21 (1 point)

What is the result of the following expression:

floor(123.4567 * 100 + .5) / 100

Question 21 options:

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True

False

Explanation / Answer

Answer 12
*********
false, radius could be variable name e.g int radius

Answer 13
*********

int s=20

Answer 14
*********
11/2 = 5.5 if variable is declare as float else if int declared then value will be 5

Answer 15
*********
(2/5)*3 = (0.4)*3 = 1.2

Answer 16
**********
1.0

#include <stdio.h>
#include <conio.h>

int main()
{
    double d=1.0;
    int a=1;
    d = a++;
    printf("%lf",d);
    return 0;
}

Answer 17
*********
2.0

#include <stdio.h>
#include <conio.h>

int main()
{
    double d=1.0;
    int a=1;
    d = ++a;
    printf("%lf",d);
    return 0;
}

Answer 18
*********
0.0

#include <stdio.h>
#include <conio.h>

int main()
{
    double d=1.0;
    int a=1;
    d = a/2;
    printf("%lf",d);
    return 0;
}

Answer 19
*********
False

case constant2:
        // code to be executed if n is equal to constant2;
        break;
        .
        .
        .
    default:
        // code to be executed if n doesn't match any constant

in cases we need to break but in default it will not need to break , if you want to
terminate program then break in the default will need

Answer 20
*********
False

both condition should be satisfied as && sign is there not || or sign

Answer 21
*********
123.4617

but using floor it will be 123.00

Thanks

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