C++ Template for int double char

C++ Help Class templates. I need to modify my Array class so that it can read int double and char types. I have the following to be modified: Array.h

#ifndef ARRAY_H #define ARRAY_H

#include

class Array { friend std::ostream &operator>( std::istream &, Array & );

public: explicit Array( int = 3 ); // default constructor ~Array(); // destructor size_t getSize() const; // return size

const Array &operator=( const Array & ); // assignment operator bool operator==( const Array & ) const; // equality operator // subscript operator for const objects returns rvalue int operator[]( int ) const; private: size_t size; // pointer-based array size int *ptr; // pointer to first element of pointer-based array }; // end class Array

#endif

Array.cpp

#include

#include

#include

#include "Array.h" // Array class definition

using namespace std;

// default constructor for class Array (default size 3)

Array::Array( int arraySize )

: size( arraySize > 0 ? arraySize :

throw invalid_argument( "Array size must be greater than 0" ) ),

ptr( new int[ size ] )

{

for ( size_t i = 0; i

ptr[ i ] = 0; // set pointer-based array element

} // end Array default constructor

// destructor for class Array

Array::~Array()

{

delete [] ptr; // release pointer-based array space

} // end destructor

// return number of elements of Array

size_t Array::getSize() const

{

return size; // number of elements in Array

} // end function getSize

// overloaded assignment operator;

// const return avoids: ( a1 = a2 ) = a3

const Array &Array::operator=( const Array &right )

{

if ( &right != this ) // avoid self-assignment

{

// for Arrays of different sizes, deallocate original

// left-side Array, then allocate new left-side Array

if ( size != right.size )

{

delete [] ptr; // release space

size = right.size; // resize this object

ptr = new int[ size ]; // create space for Array copy

} // end inner if

for ( size_t i = 0; i

ptr[ i ] = right.ptr[ i ]; // copy array into object

} // end outer if

return *this; // enables x = y = z, for example

} // end function operator=

// determine if two Arrays are equal and

// return true, otherwise return false

bool Array::operator==( const Array &right ) const

{

if ( size != right.size )

return false; // arrays of different number of elements

for ( size_t i = 0; i

if ( ptr[ i ] != right.ptr[ i ] )

return false; // Array contents are not equal

return true; // Arrays are equal

} // end function operator==

// overloaded subscript operator for const Arrays

// const reference return creates an rvalue

int Array::operator[]( int subscript ) const

{

// check for subscript out-of-range error

if ( subscript = size )

throw out_of_range( "Subscript out of range" );

return ptr[ subscript ]; // returns copy of this element

} // end function operator[]

// overloaded input operator for class Array;

// inputs values for entire Array

istream &operator>>( istream &input, Array &a )

{

for ( size_t i = 0; i

input >> a.ptr[ i ];

return input; // enables cin >> x >> y;

} // end function

// overloaded output operator for class Array

ostream &operator

{

// output private ptr-based array

for ( size_t i = 0; i

{

output

if ( ( i + 1 ) % 4 == 0 ) // 4 numbers per row of output

output

} // end for

if ( a.size % 4 != 0 ) // end last line of output

output

return output; // enables cout

} // end function operator

For it te be class teamplate we need to put all the code from array.cpp to array.h

Here is the main function:

#include

#include

#include

#include "Array.h"

using namespace std;

int main()

{

Array integers1( 2 ); // 2-element Array

Array integers2; // 3-element Array by default

// print integers1 size and contents

cout

// print integers2 size and contents

cout

// input and print integers1 and integers2

cout

cin >> integers1 >> integers2;

cout

// use overloaded assignment (=) operator

cout

integers1 = integers2; // note target Array is smaller

cout

// use overloaded equality (==) operator

cout

if ( integers1 == integers2 )

cout

else

cout

// use overloaded subscript operator to create rvalue

cout

} // end main

In the main function we need to show that class tamplate works with int double and char so we need a function template for manipulations.;

Output:

ize of first Array object is 2 Array after initialization: Size of second Array object is 3 Array after initialization: Enter 5 int values: 55 50 45 40 35 After input, the Arrays contain: First Array object: 50 Second Array object: 45 40 35 Assigning second Array object to the first Array object: First Array object: 45 40 35 Second Array object: 45 40 35 Evaluating for equality The Array objects are equal Value of first element in first Array object is 45 Size of first Array object is 2 Array after initialization: Size of second Array object is 3 Array after initialization: Enter 5 double values: 5.5 5.0 4.5 4.0 3.5 After input, the Arrays contain: First Array object: Second Array object: 4.5 4 Assigning second Array object to the first Array object: First Array object: 4.5 4 Second Array object: 4.5 4 Evaluating for equality The Array objects are equal Value of first element in first Array object is 4.5 Size ot first Array object is 2 Array after initialization: Size of second Array object is 3 Array after initialization: Enter 5 char values a b c d e After input, the Arrays contain: First Array object: Second Array object