Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Supplied code Document

 

/ Ch13_Ex11_MainProgram.cpp - given code below

// Ch13_Ex11_MainProgram.cpp - given code below // #include "stdafx.h" may uncomment this if Visual Studios requires

 

#include <iostream>

#include "myArray.h"

using namespace std;

int main()

{

// Creates list1 and list2

myArray list1(5);

myArray list2(5);

 

 

// Zeroing (initializing) first array

int i;

cout << "list1 : ";

for (i = 0; i < 5; i++)

cout << list1[i] << " ";

cout << endl;

 

// Prompt to enter five numbers into list1

cout << "Enter 5 integers: ";

for (i = 0; i < 5; i++)

cin >> list1[i];

cout << endl;

 

// show contents list1

cout << "After filling list1: ";

for (i = 0; i < 5; i++)

cout << list1[i] << " ";

cout << endl;

 

// Transfer five elements from list1 to list2, Print list2

list2 = list1;

cout << "list2 : ";

for (i = 0; i < 5; i++)

cout << list2[i] << " ";

cout << endl;

 

// Write three elements replacing first 3 of list1

cout << "Enter 3 elements: ";

for (i = 0; i < 3; i++)

cin >> list1[i];

cout << endl;

 

// Prints three elements of list1 just entered

cout << "First three elements of list1: " << endl;

for (i = 0; i < 3; i++)

cout << list1[i] << " ";

cout << endl;

 

// Create list3 for first time

// Induced Chaos by

// cramming -2 to 6 into array list3

myArray list3(-2, 6);

 

// Print 8 array location numbers from -2 through 5

// Should print zero eight times if memory is initialized

cout << "list3: ";

for (i = -2; i < 6; i++) cout << list3[i] << " ";

cout << endl;

list3[-2] = 7;

list3[4] = 8;

list3[0] = 54;

list3[2] = list3[4] + list3[-2];

 

// Print results to screen

cout << "list3: ";

for (i = -2; i < 6; i++)

cout << list3[i] << " ";

cout << endl;

system("pause");

return 0;

}

## Chapter 13 - Exercise #11: Handling Array Index Out of Bounds

This assignment relates to content from Chapter 13 and Exercise #11 of the eText. The objective is to have the program know when numbers out of the array boundaries are received and mitigate those problems. Here, the supplied code intentionally induces numbers out of bounds and the student’s portion must correct for this. As always use a header file and implementation file to do those calculations. Remember not to change the given code below in any way. Instructors are encouraged to paste this default code over your own code and see if your program still runs.

### Instructions

You will **not** complete this assignment in Mindtap. This assignment will be completed in Visual Studio and submitted to the associated Assignment Folder. To complete your assignment, ZIP and submit the entire project folder with *.sln project file inside.

1. **Download the [supplied code](link-to-supplied-code).** Do not change anything in the supplied code which is the Ch13_Ex11_MainProgram.cpp (except to add documentation and your name). Please use the file names listed below since your file will have the same components in the supplied code.

2. **Recall that in C++, there is no check on an array index out of bounds.** However, during program execution, an array index out of bounds can cause serious problems. Also, in C++, the array index starts at 0.

3. **Design and implement the class `myArray`** that solves the array index out of bounds problem and also allows the user to begin the array index starting at any integer, positive or negative.
    - Every object of type `myArray` is an array of type `int`. During execution, when accessing an array component, if the index is out of bounds, the program must terminate with an appropriate error message. Consider the following statements:
      ```cpp
      myArray list(5);
      //Line 1 myArray
      myList(2, 13);
      //Line 2
      myArray yourList(-5, 9);
      //Line 3
      ```
      The statement in Line 1 declares list to be an array of 5 components, the component type is `int`, and the components are: `list[0]`, `list[1]`, ..., `list[4]`. The statement in Line 2 declares `myList` to be an array
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Transcribed Image Text:## Chapter 13 - Exercise #11: Handling Array Index Out of Bounds This assignment relates to content from Chapter 13 and Exercise #11 of the eText. The objective is to have the program know when numbers out of the array boundaries are received and mitigate those problems. Here, the supplied code intentionally induces numbers out of bounds and the student’s portion must correct for this. As always use a header file and implementation file to do those calculations. Remember not to change the given code below in any way. Instructors are encouraged to paste this default code over your own code and see if your program still runs. ### Instructions You will **not** complete this assignment in Mindtap. This assignment will be completed in Visual Studio and submitted to the associated Assignment Folder. To complete your assignment, ZIP and submit the entire project folder with *.sln project file inside. 1. **Download the [supplied code](link-to-supplied-code).** Do not change anything in the supplied code which is the Ch13_Ex11_MainProgram.cpp (except to add documentation and your name). Please use the file names listed below since your file will have the same components in the supplied code. 2. **Recall that in C++, there is no check on an array index out of bounds.** However, during program execution, an array index out of bounds can cause serious problems. Also, in C++, the array index starts at 0. 3. **Design and implement the class `myArray`** that solves the array index out of bounds problem and also allows the user to begin the array index starting at any integer, positive or negative. - Every object of type `myArray` is an array of type `int`. During execution, when accessing an array component, if the index is out of bounds, the program must terminate with an appropriate error message. Consider the following statements: ```cpp myArray list(5); //Line 1 myArray myList(2, 13); //Line 2 myArray yourList(-5, 9); //Line 3 ``` The statement in Line 1 declares list to be an array of 5 components, the component type is `int`, and the components are: `list[0]`, `list[1]`, ..., `list[4]`. The statement in Line 2 declares `myList` to be an array
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Follow-up Question

Could you please look at step 3, for some reasons I am getting errors?

 

 

myArray.cpp
++Array Out_of_Bounds Instructions
#pragma once
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myArray.h* X Ch13_Ex11_MainProgram.cpp
class myArray
{
public:
myArray (int indexs, int indexE);
myArray (int arrayLength);
int& operator[] (const int index);
private:
8:
int* list;
int length;
int indexStart;
int indexEnd;
};
Bint& myArray::operator[](int index) //overloading array index
{
if (index >= indexStart && index <= indexEnd) //check to see if its within bounds
{
}
else
{
}
int& indexLoc = *(list + index); //set memeory location to store actual value of the list index.
return indexLoc;
cout << "Index is out of range.\n";
exit(0);
→↓↓ myArray
}
✓ No issues found
100%
Error List
Entire Solution
Description
Code
XC2065
X C2065
'cout': undeclared identifier
'cout': undeclared identifier
X C3861 'exit': identifier not found
9
X 3 Errors A 0 Warnings ✪ 0 Messages Build+ IntelliSense
operator[](int index)
Project
Array Out_of_Bounds Instructions
Array Out of Bounds Instructions
Array Out_of_Bounds Instructions
File
myArray.h
myArray.h
myArray.h
Ln: 27
Ch: 36
Col: 42
Search Error List
Line
27
27
28
expand button
Transcribed Image Text:myArray.cpp ++Array Out_of_Bounds Instructions #pragma once 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 myArray.h* X Ch13_Ex11_MainProgram.cpp class myArray { public: myArray (int indexs, int indexE); myArray (int arrayLength); int& operator[] (const int index); private: 8: int* list; int length; int indexStart; int indexEnd; }; Bint& myArray::operator[](int index) //overloading array index { if (index >= indexStart && index <= indexEnd) //check to see if its within bounds { } else { } int& indexLoc = *(list + index); //set memeory location to store actual value of the list index. return indexLoc; cout << "Index is out of range.\n"; exit(0); →↓↓ myArray } ✓ No issues found 100% Error List Entire Solution Description Code XC2065 X C2065 'cout': undeclared identifier 'cout': undeclared identifier X C3861 'exit': identifier not found 9 X 3 Errors A 0 Warnings ✪ 0 Messages Build+ IntelliSense operator[](int index) Project Array Out_of_Bounds Instructions Array Out of Bounds Instructions Array Out_of_Bounds Instructions File myArray.h myArray.h myArray.h Ln: 27 Ch: 36 Col: 42 Search Error List Line 27 27 28
Solution
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Follow-up Questions
Read through expert solutions to related follow-up questions below.
Follow-up Question

Could you please look at step 3, for some reasons I am getting errors?

 

 

myArray.cpp
++Array Out_of_Bounds Instructions
#pragma once
1
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3
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5
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8
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myArray.h* X Ch13_Ex11_MainProgram.cpp
class myArray
{
public:
myArray (int indexs, int indexE);
myArray (int arrayLength);
int& operator[] (const int index);
private:
8:
int* list;
int length;
int indexStart;
int indexEnd;
};
Bint& myArray::operator[](int index) //overloading array index
{
if (index >= indexStart && index <= indexEnd) //check to see if its within bounds
{
}
else
{
}
int& indexLoc = *(list + index); //set memeory location to store actual value of the list index.
return indexLoc;
cout << "Index is out of range.\n";
exit(0);
→↓↓ myArray
}
✓ No issues found
100%
Error List
Entire Solution
Description
Code
XC2065
X C2065
'cout': undeclared identifier
'cout': undeclared identifier
X C3861 'exit': identifier not found
9
X 3 Errors A 0 Warnings ✪ 0 Messages Build+ IntelliSense
operator[](int index)
Project
Array Out_of_Bounds Instructions
Array Out of Bounds Instructions
Array Out_of_Bounds Instructions
File
myArray.h
myArray.h
myArray.h
Ln: 27
Ch: 36
Col: 42
Search Error List
Line
27
27
28
expand button
Transcribed Image Text:myArray.cpp ++Array Out_of_Bounds Instructions #pragma once 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 myArray.h* X Ch13_Ex11_MainProgram.cpp class myArray { public: myArray (int indexs, int indexE); myArray (int arrayLength); int& operator[] (const int index); private: 8: int* list; int length; int indexStart; int indexEnd; }; Bint& myArray::operator[](int index) //overloading array index { if (index >= indexStart && index <= indexEnd) //check to see if its within bounds { } else { } int& indexLoc = *(list + index); //set memeory location to store actual value of the list index. return indexLoc; cout << "Index is out of range.\n"; exit(0); →↓↓ myArray } ✓ No issues found 100% Error List Entire Solution Description Code XC2065 X C2065 'cout': undeclared identifier 'cout': undeclared identifier X C3861 'exit': identifier not found 9 X 3 Errors A 0 Warnings ✪ 0 Messages Build+ IntelliSense operator[](int index) Project Array Out_of_Bounds Instructions Array Out of Bounds Instructions Array Out_of_Bounds Instructions File myArray.h myArray.h myArray.h Ln: 27 Ch: 36 Col: 42 Search Error List Line 27 27 28
Solution
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