Question

Lanuage C++ (Beginner level)

Please...I need help with this assignment

If I still have question, can i contact you?

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Program 1 - WRITE ALL THE CODE in ONE FILE...   MyArrayPtrArith1.cpp

Step 1 - Define the class

Write a class, myArrayClass, that creates an integer array.

* Add an 'arraySize' variable, initialize to zero ( default constructor function )

* Create int * ptrArray ( default constructor set to NULL )

* Add a default constructor ( see above for what is should do )

* Add a parm constructor that can set the array size,

    and then assigns new int[arraySize] to ptrArray. Validate size > 0.

* Add a setSize function that lets the user input a size, arraySize, of an array of integers,

    and then assigns new int[arraySize] to ptrArray ( only if it is NULL ). Validate size > 0.

* Add a function, setAllValues, Have the user prompted and then enter the values for the array.

   Validate that ptrArray != NULL, if so then add values . Use pointer arithmetic to specify the index of the array while the user is entering the values into the array.

* Add a printAll function that prints out the array...values using pointer arithmetic. Validate that ptrArray != NULL, if so then print out all values

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testing: - code for int main() --

                   // Step 2 - Declare and Step 3 use it

                   // Test default constructor

                   myArrayClass Array1;

                   Array1.setSize(6);                        

                   Array1.setAllValues(); // Code a Loop that asks for input for each value one at a time

                                                        // Input 10,10,20,25,30,35,42

                   Array1.printAll();

                // Test parm constructor

                   myArrayClass(7) Array2;

                   Array2.setAllValues();

                   Array2.printAll();

                   // Test with default constructor

                   myArrayClass * ptrArray1 = new myArrayClass;

                   ....... // add code to call setSize function, use 7

                 ....... // add code to call setAllValues function: input 100,150,200,250,300,350,420

                 ....... // add code to call printAll function

Answer 1

Here is the code for MyArrayClass.cpp:

#include <iostream>
using namespace std;
class MyArrayClass
{
//Add an 'arraySize' variable, initialize to zero ( default constructor function )
int arraySize;
//Create int * ptrArray ( default constructor set to NULL )
int *ptrArray;
public:
//Add a default constructor ( see above for what is should do )
MyArrayClass()
{
arraySize = 0;
ptrArray = NULL;
}
// Add a parm constructor that can set the array size,
// and then assigns new int[arraySize] to ptrArray. Validate size > 0.
MyArrayClass(int size)
{
if(size > 0)
{
    arraySize = size;
   ptrArray = new int[arraySize];  
   }   
}
// Add a setSize function that lets the user input a size, arraySize, of an array of integers,
// and then assigns new int[arraySize] to ptrArray ( only if it is NULL ). Validate size > 0.
void setSize()
{
int size;
cout<<"Enter the size of the array: ";
cin>>size;
while(size <= 0)
{
cout<<"Size should be greater than zero."<<endl;
cout<<"Enter the size of the array: ";
cin>>size;
}
if(ptrArray == NULL)
{
    arraySize = size;
    ptrArray = new int[arraySize];
}  
}
// Add a function, setAllValues, Have the user prompted and then enter the values for the
// array. Validate that ptrArray != NULL, if so then add values . Use pointer arithmetic
// to specify the index of the array while the user is entering the values into the array.
void setAllValues()
{
    if(ptrArray != NULL)
    {
       cout << "Enter " << arraySize << " values to read into the array: ";
       for(int i = 0; i < arraySize; i++)
           cin >> *(ptrArray + i);
    }
}
// Add a printAll function that prints out the array...values using pointer arithmetic.
// Validate that ptrArray != NULL, if so then print out all values
void printAll()
{
        if(ptrArray != NULL)
        {
           for(int i = 0; i < arraySize; i++)
               cout << *(ptrArray + i) << "\t";
           cout << endl;  
        }
}
};

And the code for MyArrayClassDemo.cpp:

#include "MyArrayClass.cpp"
int main()
{
    // Step 2 - Declare and Step 3 use it
    // Test default constructor
    MyArrayClass Array1;
    Array1.setSize();
    Array1.setAllValues(); // Code a Loop that asks for input for each value one at a time
    // Input 10,10,20,25,30,35,42
    Array1.printAll();
   
    // Test parm constructor
    MyArrayClass Array2(7);
    Array2.setAllValues();
    Array2.printAll();
   
    // Test with default constructor
    MyArrayClass * ptrArray1 = new MyArrayClass();
    ptrArray1->setSize(); // add code to call setSize function, use 7
    ptrArray1->setAllValues(); // add code to call setAllValues function: input 100,150,200,250,300,350,420
    ptrArray1->printAll(); // add code to call printAll function
}

And the output screenshot is:

Terminal Shell Edit View Window Help 1.73 GB <D < > u. [.] -))) 96% E ], Thu 23 Mar 13:21 ANANDA KUMAR THUMMAPUDI a E Currently Open Docum | class GeneralFile.txt #include <iostream> с. Months.cpp h Months.h 2 using namespace std; class MyArrayClass //Add an 'arraySize' variable, initialize to zerodefault cot int arraySize; //Create int ptrArray default constructor set to NULL int *ptrArray; public: //Add a default constructorsee above for what is should do Enter the size of the array:7 MyArrayclass() HomeworkLibCPP- bash 80x24 /HomeworkLibCPP--bash Macintosh:HomeworkLibCPP AnandaKumarThummapudis g+t MyArrayClassDeno.cpp Macintosh:HomeworkLibCPP AnandaKunarThummapudis .fa.out Enter 7 values to read into the array: 10 10 28 35 30 35 42 10 Enter 7 values to read into the array: 10 10 20 35 30 35 42 10 Enter the size of the array:7 Enter 7 values to read into the array: 100 150 208 250 300 350 420 100 1e 20 35 35 42 arraySize0; ptrArrayNULL; 10 20 30 35 42 / Add a parm constructor that can set the array size, // and then assigns new int larraySizel to ptrArray. Validate s Macintosh:HomeworkLibcPP AnandaKumarThummapudis 150 200 250 300 420 MyArrayClass(int size) if size> 0) arraySize size; ptrArraynew int [arraySizel: // Add a setSize function that lets the user input a size, ar // and then assigns new int [arraySizel to ptrArray only if void setsSize() int size; coutcc"Enter the size of the array:" cin>size; while(size <0) cout<<"size should be greater than zero."endl; cout<<" Enter the size of the array: "; cinsosize if (ptrArrayNULL) arraySize size; ptrArraynew int [arraySizel: 45 46 // Add a function, setAL1Values, Have the user prompted and then enter the values for the // array. Validate that pt rArray != NULL, if so then add values . Use pointer arithmetic /I to specify the index of the array while the user is entering the values into the array.