CS2400 Lab 7-Computer Class Solved

Description

Classes, friend functions and overloaded operators.

Computer class:

Design a computer class (Computer) that describes a computer object. A computer has the following properties:

• Amount of Ram in GB (examples: 8, 16), defaults to 8.
• Hard drive size in GB (examples: 500, 1000), defaults to 500.
• Speed in GHz (examples: 1.6, 2.4), defaults to 1.6.
• Type (laptop, desktop), defaults to “desktop”

Provide the following functions for the class:

• A default constructor (constructor with no parameters) that initializes all the variables to their default values.
• A constructor with four parameters to initialize all four member variables.
• Getters(accessors) and setters(mutators) for all four member variables.
• Calculate the price using the following formulas:

o Laptop: 600.00 + amount of ram in GB * 5.00 + Hard drive size * .15 +

(speed in GHz – 1.6) * 200 o Desktop: 400.00 + amount of ram in GB * 4.00 + Hard drive size in GB * .10 + (speed in GHz – 1.6) * 200

• Overload the << operator to output all properties of a computer.
• Overload the >> operator that reads all four properties of a computer.
• Overload the == operator test if two computers are the same (all properties must match)
• Overload the < operator that compares the prices of two computers.

You don’t have to check for invalid values.

Test the Computer class with the following main program. 

int main()

{

Computer comp; //use default constructor  Computer comp1(16, 1000, 1.6, “Laptop”);

cout << comp << endl; //output defaults       cout << endl;  cout << comp1 << endl;

cout << endl;

comp1.setRam(32);

comp1.setHd(2000);

int compRam = comp1.getRam();

cout << “The computer ram was changed to ”

<< comp1.getRam() << endl;      cout << “The computer hd was changed to ”

<< comp1.getHd() << endl;  cout << “Updated info” << endl << endl;

cout << comp1 << endl;     cout << endl;  comp1.setType(“Desktop”);

cout << “Computer type was changed to Desktop” << endl;    cout << comp1 << endl;

Computer comp2;

cout << “Enter specs of a computer (Ram, HD, Speed, Type)” << endl;       cin >> comp2;  cout << comp2 << endl;

if (comp1 < comp2)

{

cout << “Computer 2 is more expensive” << endl;

}

if (comp1 == comp2)

{

cout << “comp1 and comp2 have the same specifications” << endl;

}

return 0;

}