3 C++ Errors, please help

Hello, I am getting 3 errors in my code that I have not figured out how to sort out.

The first: error c1083: Cannot open include file: 'Rectangle.h": No such file or directory

The second: Intellisense: cannot open source file "Rectangle.h"

The third: Intellisense: cannot open source file "Rectangle.h"

My code below:

#include "stdafx.h"

int _tmain(int argc, _TCHAR* argv[])

{

return 0;

}

#ifndef RECTANGLE_H

#define RECTANGLE_H

class Rectangle {

public:

Rectangle();

void setLength( float );

void setWidth( float );

float getLength();

float getWidth();

float getArea();

float getPerimeter();

private:

float length;

float width;

};

# endif

#include

using std::cout;

#include "Rectangle.h"

Rectangle::Rectangle()

{

setLength( 1.0 );

setWidth( 1.0 );

}

void Rectangle::setLength( float myLength )

{

if( ( myLength < 20 ) && ( myLength > 0 ) )

length = myLength;

else

{

cout << " \tInvalid Length. Default length will be assigned. ";

length = 1.0;

}

}

void Rectangle::setWidth( float myWidth )

{

if ( ( myWidth < 20 ) && ( myWidth > 0 ) )

width = myWidth;

else

{

cout << " \tInvalid wifth. Default width will be assigned.";

width = 1;

}

}

float Rectangle::getLength()

{

return length;

}

float Rectangle::getWidth()

{

return width;

}

float Rectangle::getArea()

{

return ( length * width );

}

float Rectangle::getPerimeter()

{

return ( 2 * ( length + width ) );

}

#include

using std::cout;

using std::cin;

#include "Rectangle.h"

int main()

{

float t;

cout << " \tA program that works with Rectangle class.";

Rectangle myRectangle;

cout << " \tInitial values of rectangle were: "

<< " \tLength = " << myRectangle.getLength()

<< " \tWidth = " << myRectangle.getWidth();

cout << "/n/n/tModify the rectangle dimensions. ";

cout << " \tEnter length: ";

cin >> t;

myRectangle.setLength( t );

cout << " \tEnter width: ";

cin>>t;

myRectangle.setWidth( t );

cout << " \tAfter modifying values, dimensions are: "

<< " \tLength = " << myRectangle.getLength()

<< " \tWidth = " << myRectangle.getWidth();

cout <<" \tThe area of rectangle is: "

<< myRectangle.getArea();

cout << " \tThe perimeter of rectangle is: "

<< myRectangle.getPerimeter();

cout << " \t";

system( "pause" );

return 0;

}