Programming & Computer Science Answers

Create a class that allows you to treat the 10 separate arrays in Exercise 10 as a single

one-dimensional array, using array notation with a single index. That is, statements in

main() can access their elements using expressions like a[j], even though the class

member functions must access the data using the two-step approach. Overload the subscript

operator [] (see Chapter 9, “Inheritance”) to achieve this result. Fill the arrays

with test data and then display it. Although array notation is used in the class interface in

main() to access “array” elements, you should use only pointer notation for all the operations

in the implementation (within the class member functions).

Create a class called Float. We’ll use it to model numbers of type float that are stored

in fmemory instead of real memory. The only instance data in Float is its own “address”;

that is, the index where its float value is stored in fmemory. Call this instance variable

addr. Class Float also needs two member functions. The first is a one-argument constructor

to initialize the Float with a float value. This constructor stores the float

value in the element of fmemory pointed to by fmem_top, and stores the value of

fmem_top in addr. This is similar to how the compiler and linker arrange to store an ordinary

variable in real memory. The second member function is the overloaded & operator.

It simply returns the pointer (really the index, type int) value in addr.

Create a second class called ptrFloat. The instance data in this class holds the address

(index) in pmemory where some other address (index) is stored. A member function initializes

this “pointer” with an int index value.

Add a destructor to the LINKLIST program. It should delete all the links when a linklist

object is destroyed. It can do this by following along the chain, deleting each link as it

goes. You can test the destructor by having it display a message each time it deletes a

link; it should delete the same number of links that were added to the list. (A destructor

is called automatically by the system for any existing objects when the program exits.)

Write your own unique Python program that has a runtime error. Do not copy the program from your textbook or the Internet. Provide the following.


The code of your program.

Output demonstrating the runtime error, including the error message.

An explanation of the error message.

An explanation of how to fix the error.

1. Copy the countdown function from Section 5.8 of your textbook. def countdown(n): if n <= 0: print('Blastoff!') else: print(n) countdown(n-1) Write a new recursive function countup that expects a negative argument and counts “up” from that number. Output from running the function should look something like this: >>> countup(-3) -3 -2 -1 Blastoff! Write a Python program that gets a number using keyboard input. (Remember to use input for Python 3 but raw_input for Python 2.) If the number is positive, the program should call countdown. If the number is negative, the program should call countup. Choose for yourself which function to call (countdown or countup) for input of zero. Provide the following. The code of your program. Output for the following input: a positive number, a negative number, and zero. An explanation of your choice for what to call for input of zero.

Describe the difference between a chained conditional and a nested conditional. Describe a strategy to avoid nested conditions. Give an example of a nested conditional that can be changed to a single conditional, and show the equivalent unique conditional

write a program that uses input to prompt a user for their name

Write a program that initializes an array of ten integers. It input an integer (key) from the user and search the value (key) in the array using sequential search.

Describe the difference between a chained conditional and a nested conditional.

Describe a strategy to avoid nested conditions. Give an example of a nested conditional that can be changed to a single conditional, and show the equivalent unique conditional

Google chrome is a search again .true or false