Would like help with the following Question 1 (5 points) In the representation o

Question

Would like help with the following

Question 1 (5 points)

In the representation of floating point data types, which part of the representation controls the precision?

Question 1 options:

Both the mantissa and exponent

The mantissa

The exponent

The sign bit

Save

Question 2 (5 points)

Which of the following is not a scalar data type?

Question 2 options:

Boolean types

Record types

Integer types

Enumerated types

Save

Question 3 (5 points)

In which of the following languages, can subscripting not be used to select a single character with in a string?

Question 3 options:

Java

Ada

C++

C

Save

Question 4 (5 points)

Which of the following types is intended to be used for nonnumeric data?

Question 4 options:

Integer types

Floating point types

Decimal types

Enumerated types

Save

Question 5 (5 points)

When a two-dimensional array is stored in row major order, which of the following values is needed to compute the location of an array element?

Question 5 options:

Half the total number of elements in the array

The total number of elements in the array

The number of rows

The number of columns

Save

Question 6 (5 points)

What is the difference between a discriminated and free union?

Question 6 options:

A discriminated union has a tag or discriminant field

Free unions require greater run time error checking

The size of free unions cannot be computed at compile time

There is no difference

Save

Question 7 (5 points)

Which of the following languages has both pointers and references?

Question 7 options:

Ada

Java

C++

C

Save

Question 8 (5 points)

Consider the following code fragment in C++: int *p = new int; p = new int; What happens as a result of the above code?

Question 8 options:

Garbage is created

A dangling pointer is created

The above code will not compile

A dangling reference is created

Save

Question 9 (5 points)

When the reserved word static modifies a C++ local variable, what effect does it have?

Question 9 options:

It changes the variable's lifetime

static cannot modify local variables in C++

It changes both the scope and lifetime

It changes the variable's scope

Save

Question 10 (5 points)

Variables that are bound to a memory location throughout the life of a program are which of the following kind of variables?

Question 10 options:

Explicit heap-dynamic variables

Implicit heap-dynamic variables

Local variables allocated on the stack

Static variables

Save

Question 11 (5 points)

For a language to be able to allow recursion, what type of memory allocation must the language support?

Question 11 options:

Heap allocation

Free store allocation

Stack allocation

Static allocation

Save

Question 12 (5 points)

In Java, under what conditions can two local variables in the same method have the same name?

Question 12 options:

There are no restrictions

Provided their scopes are disjoint

Two different local variables can never have the same name

Provided they have different scopes

Save

Question 13 (5 points)

Which of the following languages is the most strongly typed?

Question 13 options:

C++

C

Java

Ada

Save

Question 14 (5 points)

The struct data type of C can best be described as which of the following kinds of types?

Question 14 options:

A record type

A pointer type

An array type

A reference type

Save

Question 15 (5 points)

When does static binding of a variable name to a memory location occur?

Question 15 options:

Not until link time

It depends on the program

At compile time

Not until run time

Save

Question 16 (5 points)

When a language provides automatic garbage collected, which of the following tasks is the programmer freed from having to do explicitly?

Question 16 options:

Deallocate heap-dynamic variables

Allocate heap-dynamic variables

Allocate stack-dynamic variables

Deallocate stack-dynamic variables

Save

Question 17 (5 points)

In Java, which of the following produces a compilation error?

Question 17 options:

Assigning a double to a float

Assigning a short to a int

Assigning an int to a long

Assigning an int to a double

Save

Question 18 (5 points)

Consider the following code fragment in C++: int *p; *p = 5; What happens as a result of the above code?

Question 18 options:

Garbage is created that can never be deallocated

Automatic garbage collection occurs

A dangling pointer is being deferenced, which could cause the program to crash

The above code will not compile

Save

Question 19 (5 points)

What term is used to describe the language feature in which the type of a variable is determined by a default convention, such as a naming convention?

Question 19 options:

Explicit declaration

Implicit declaration

Default binding

Name binding

Save

Question 20 (5 points)

Which of the following best describes the difference between a pointer and a reference?

Question 20 options:

Pointers can point to memory on the heap, references cannot

Pointers are implicitly dereferenced

References can point to memory on the heap, pointers cannot

References are implicitly dereferenced

Save

Both the mantissa and exponent

The mantissa

The exponent

The sign bit

Explanation / Answer

Q1. The mantissa

Q2. Record type

Q3. Java

Q4. Enumerated types

Q5. The number of rows

Q6. A discriminated ubion has a tag or discriminant field

Q7. C++

Q8. A dangling pointer is created

Q9. It changes the variable's liftime

Q10. Static variables

Q11. Stack allocation

Q12. Two different local variables can never have the same name

Q13. Java

Q14. A record type

Q15. At compile time

Q16. Deallocate heap-dynamic variables

Q17. Assigning a double to a float

Q18. A dangling pointer is being deferenced, which could cause the program to crash

Q19. Name binding

Q20. Refrences are implicitly dereferenced

Related Questions

Navigate

• Browse (All)
• Browse W
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.